README.md

   1 **These policies are in active development and so might contain changes that do not work with current versions of Firefox.**
   2
   3 **You should use the [officially released versions](https://github.com/mozilla/policy-templates/releases) if you are deploying changes.**
   4
   5 Policies can be specified using the [Group Policy templates on Windows](https://github.com/mozilla/policy-templates/tree/master/windows), [Intune on Windows](https://support.mozilla.org/kb/managing-firefox-intune), [configuration profiles on macOS](https://github.com/mozilla/policy-templates/tree/master/mac), or by creating a file called `policies.json`. On Windows, create a directory called `distribution` where the EXE is located and place the file there. On Mac, the file goes into `Firefox.app/Contents/Resources/distribution`.  On Linux, the file goes into `firefox/distribution`, where `firefox` is the installation directory for firefox, which varies by distribution or you can specify system-wide policy by placing the file in `/etc/firefox/policies`.
   6
   7 | Policy Name | Description
   8 | --- | --- |
   9 | **[`3rdparty`](#3rdparty)** | Set policies that WebExtensions can access via chrome.storage.managed.
  10 | **[`AllowedDomainsForApps`](#alloweddomainsforapps)** | Define domains allowed to access Google Workspace.
  11 | **[`AppAutoUpdate`](#appautoupdate)** | Enable or disable automatic application update.
  12 | **[`AppUpdateURL`](#appupdateurl)** | Change the URL for application update.
  13 | **[`Authentication`](#authentication)** | Configure sites that support integrated authentication.
  14 | **[`AutoLaunchProtocolsFromOrigins`](#autolaunchprotocolsfromorigins)** | Define a list of external protocols that can be used from listed origins without prompting the user.
  15 | **[`BackgroundAppUpdate`](#backgroundappupdate)** | Enable or disable the background updater (Windows only).
  16 | **[`BlockAboutAddons`](#blockaboutaddons)** | Block access to the Add-ons Manager (about:addons).
  17 | **[`BlockAboutConfig`](#blockaboutconfig)** | Block access to about:config.
  18 | **[`BlockAboutProfiles`](#blockaboutprofiles)** | Block access to About Profiles (about:profiles).
  19 | **[`BlockAboutSupport`](#blockaboutsupport)** | Block access to Troubleshooting Information (about:support).
  20 | **[`Bookmarks`](#bookmarks)** | Add bookmarks in either the bookmarks toolbar or menu.
  21 | **[`CaptivePortal`](#captiveportal)** | Enable or disable the detection of captive portals.
  22 | **[`Certificates`](#certificates)** |
  23 | **[`Certificates -> ImportEnterpriseRoots`](#certificates--importenterpriseroots)** | Trust certificates that have been added to the operating system certificate store by a user or administrator.
  24 | **[`Certificates -> Install`](#certificates--install)** | Install certificates into the Firefox certificate store.
  25 | **[`Cookies`](#cookies)** | Configure cookie preferences.
  26 | **[`DisableAppUpdate`](#disableappupdate)** | Turn off application updates.
  27 | **[`DisableBuiltinPDFViewer`](#disablebuiltinpdfviewer)** | Disable the built in PDF viewer.
  28 | **[`DisabledCiphers`](#disabledciphers)** | Disable ciphers.
  29 | **[`DisableDefaultBrowserAgent`](#disabledefaultbrowseragent)** | Prevent the default browser agent from taking any actions (Windows only).
  30 | **[`DisableDeveloperTools`](#disabledevelopertools)** | Remove access to all developer tools.
  31 | **[`DisableFeedbackCommands`](#disablefeedbackcommands)** | Disable the menus for reporting sites.
  32 | **[`DisableFirefoxScreenshots`](#disablefirefoxscreenshots)** | Remove access to Firefox Screenshots.
  33 | **[`DisableFirefoxAccounts`](#disablefirefoxaccounts)** | Disable Firefox Accounts integration (Sync).
  34 | **[`DisableFirefoxStudies`](#disablefirefoxstudies)** | Disable Firefox studies (Shield).
  35 | **[`DisableForgetButton`](#disableforgetbutton)** | Disable the "Forget" button.
  36 | **[`DisableFormHistory`](#disableformhistory)** | Turn off saving information on web forms and the search bar.
  37 | **[`DisableMasterPasswordCreation`](#disablemasterpasswordcreation)** | Remove the master password functionality.
  38 | **[`DisablePasswordReveal`](#disablepasswordreveal)** | Do not allow passwords to be revealed in saved logins.
  39 | **[`DisablePocket`](#disablepocket)** | Remove Pocket in the Firefox UI.
  40 | **[`DisablePrivateBrowsing`](#disableprivatebrowsing)** | Remove access to private browsing.
  41 | **[`DisableProfileImport`](#disableprofileimport)** | Disables the "Import data from another browser" option in the bookmarks window.
  42 | **[`DisableProfileRefresh`](#disableprofilerefresh)** | Disable the Refresh Firefox button on about:support and support.mozilla.org
  43 | **[`DisableSafeMode`](#disablesafemode)** | Disable safe mode within the browser.
  44 | **[`DisableSecurityBypass`](#disablesecuritybypass)** | Prevent the user from bypassing security in certain cases.
  45 | **[`DisableSetDesktopBackground`](#disablesetdesktopbackground)** | Remove the "Set As Desktop Background..." menuitem when right clicking on an image.
  46 | **[`DisableSystemAddonUpdate`](#disablesystemaddonupdate)** | Prevent system add-ons from being installed or update.
  47 | **[`DisableTelemetry`](#disabletelemetry)** | DisableTelemetry
  48 | **[`DisplayBookmarksToolbar`](#displaybookmarkstoolbar)** | Set the initial state of the bookmarks toolbar.
  49 | **[`DisplayMenuBar (Deprecated)`](#displaymenubar-deprecated)** | Set the initial state of the menubar.
  50 | **[`DisplayMenuBar`](#displaymenubar)** | Set the state of the menubar.
  51 | **[`DNSOverHTTPS`](#dnsoverhttps)** | Configure DNS over HTTPS.
  52 | **[`DontCheckDefaultBrowser`](#dontcheckdefaultbrowser)** | Don't check if Firefox is the default browser at startup.
  53 | **[`DefaultDownloadDirectory`](#defaultdownloaddirectory)** | Set the default download directory.
  54 | **[`DownloadDirectory`](#downloaddirectory)** | Set and lock the download directory.
  55 | **[`EnableTrackingProtection`](#enabletrackingprotection)** | Configure tracking protection.
  56 | **[`EncryptedMediaExtensions`](#encryptedmediaextensions)** | Enable or disable Encrypted Media Extensions and optionally lock it.
  57 | **[`EnterprisePoliciesEnabled`](#enterprisepoliciesenabled)** | Enable policy support on macOS.
  58 | **[`Extensions`](#extensions)** | Control the installation, uninstallation and locking of extensions.
  59 | **[`ExtensionSettings`](#extensionsettings)** | Manage all aspects of extensions.
  60 | **[`ExtensionUpdate`](#extensionupdate)** | Control extension updates.
  61 | **[`FlashPlugin`](#flashplugin)** | Configure the default Flash plugin policy as well as origins for which Flash is allowed.
  62 | **[`FirefoxHome`](#firefoxhome)** | Customize the Firefox Home page.
  63 | **[`HardwareAcceleration`](#hardwareacceleration)** | Control hardware acceleration.
  64 | **[`Handlers`](#handlers)** | Configure default application handlers.
  65 | **[`Homepage`](#homepage)** | Configure the default homepage and how Firefox starts.
  66 | **[`InstallAddonsPermission`](#installaddonspermission)** | Configure the default extension install policy as well as origins for extension installs are allowed.
  67 | **[`LegacyProfiles`](#legacyprofiles)** | Disable the feature enforcing a separate profile for each installation.
  68 | **[`LocalFileLinks`](#localfilelinks)** | Enable linking to local files by origin.
  69 | **[`ManagedBookmarks`](#managedbookmarks)** | Configures a list of bookmarks managed by an administrator that cannot be changed by the user.
  70 | **[`ManualAppUpdateOnly`](#manualappupdateonly)** | Allow manual updates only and do not notify the user about updates..
  71 | **[`PrimaryPassword`](#primarypassword)** | Require or prevent using a primary (formerly master) password.
  72 | **[`NetworkPrediction`](#networkprediction)** | Enable or disable network prediction (DNS prefetching).
  73 | **[`NewTabPage`](#newtabpage)** | Enable or disable the New Tab page.
  74 | **[`NoDefaultBookmarks`](#nodefaultbookmarks)** | Disable the creation of default bookmarks.
  75 | **[`OfferToSaveLogins`](#offertosavelogins)** | Control whether or not Firefox offers to save passwords.
  76 | **[`OfferToSaveLoginsDefault`](#offertosaveloginsdefault)** | Set the default value for whether or not Firefox offers to save passwords.
  77 | **[`OverrideFirstRunPage`](#overridefirstrunpage)** | Override the first run page.
  78 | **[`OverridePostUpdatePage`](#overridepostupdatepage)** | Override the upgrade page.
  79 | **[`PasswordManagerEnabled`](#passwordmanagerenabled)** | Remove (some) access to the password manager.
  80 | **[`PDFjs`](#pdfjs)** | Disable or configure PDF.js, the built-in PDF viewer.
  81 | **[`Permissions`](#permissions)** | Set permissions associated with camera, microphone, location, and notifications.
  82 | **[`PictureInPicture`](#pictureinpicture)** | Enable or disable Picture-in-Picture.
  83 | **[`PopupBlocking`](#popupblocking)** | Configure the default pop-up window policy as well as origins for which pop-up windows are allowed.
  84 | **[`Preferences`](#preferences)** | Set and lock preferences.
  85 | **[`Preferences (Deprecated)`](#preferences-deprecated)** | Set and lock some preferences.
  86 | **[`PromptForDownloadLocation`](#promptfordownloadlocation)** | Ask where to save each file before downloading.
  87 | **[`Proxy`](#proxy)** | Configure proxy settings.
  88 | **[`RequestedLocales`](#requestedlocales)** | Set the the list of requested locales for the application in order of preference.
  89 | **[`SanitizeOnShutdown` (All)](#sanitizeonshutdown-all)** | Clear all data on shutdown.
  90 | **[`SanitizeOnShutdown` (Selective)](#sanitizeonshutdown-selective)** | Clear data on shutdown.
  91 | **[`SearchBar`](#searchbar)** | Set whether or not search bar is displayed.
  92 | **[`SearchEngines`](#searchengines-this-policy-is-only-available-on-the-esr)** |
  93 | **[`SearchEngines -> Default`](#searchengines--default)** | Set the default search engine.
  94 | **[`SearchEngines -> PreventInstalls`](#searchengines--preventinstalls)** | Prevent installing search engines from webpages.
  95 | **[`SearchEngines -> Remove`](#searchengines--remove)** | Hide built-in search engines.
  96 | **[`SearchEngines -> Add`](#searchengines--add)** | Add new search engines.
  97 | **[`SearchSuggestEnabled`](#searchsuggestenabled)** | Enable search suggestions.
  98 | **[`SecurityDevices`](#securitydevices)** | Install PKCS #11 modules.
  99 | **[`ShowHomeButton`](#showhomebutton)** | Show the home button on the toolbar.
 100 | **[`SSLVersionMax`](#sslversionmax)** | Set and lock the maximum version of TLS.
 101 | **[`SSLVersionMin`](#sslversionmin)** | Set and lock the minimum version of TLS.
 102 | **[`SupportMenu`](#supportmenu)** | Add a menuitem to the help menu for specifying support information.
 103 | **[`UserMessaging`](#usermessaging)** | Don't show certain messages to the user.
 104 | **[`WebsiteFilter`](#websitefilter)** | Block websites from being visited.
 105 | **[`WindowsSSO`](#windowssso)** | Allow Windows single sign-on for Microsoft, work, and school accounts.
 106
 107 ### 3rdparty
 108
 109 Allow WebExtensions to configure policy. For more information, see [Adding policy support to your extension](https://extensionworkshop.com/documentation/enterprise/adding-policy-support-to-your-extension/).
 110
 111 ### AppAutoUpdate
 112
 113 Enable or disable **automatic** application update.
 114
 115 If set to true, application updates are installed without user approval within Firefox. The operating system might still require approval.
 116
 117 If set to false, application updates are downloaded but the user can choose when to install the update.
 118
 119 If you have disabled updates via DisableAppUpdate, this policy has no effect.
 120
 121 **Compatibility:** Firefox 75, Firefox ESR 68.7\
 122 **CCK2 Equivalent:** N/A\
 123 **Preferences Affected:** `app.update.auto`
 124
 125 #### Windows (GPO)
 126 ```
 127 Software\Policies\Mozilla\Firefox\AppAutoUpdate = 0x1 | 0x0
 128 ```
 129 #### Windows (Intune)
 130 OMA-URI:
 131 ```
 132 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/AppAutoUpdate
 133 ```
 134 Value (string):
 135 ```
 136 <enabled/> or <disabled/>
 137 ```
 138 #### macOS
 139 ```
 140 <dict>
 141   <key>AppAutoUpdate</key>
 142   <true/> | <false/>
 143 </dict>
 144 ```
 145 #### policies.json
 146 ```
 147 {
 148   "policies": {
 149     "AppAutoUpdate": true | false
 150   }
 151 }
 152 ```
 153 ### AllowedDomainsForApps
 154
 155 Define domains allowed to access Google Workspace.
 156
 157 This policy is based on the [Chrome policy](https://chromeenterprise.google/policies/#AllowedDomainsForApps) of the same name.
 158
 159 If this policy is enabled, users can only access Google Workspace using accounts from the specified domains. If you want to allow Gmail, you can add ```consumer_accounts``` to the list.
 160
 161 **Compatibility:** Firefox 89, Firefox ESR 78.11\
 162 **CCK2 Equivalent:** N/A\
 163 **Preferences Affected:** N/A
 164
 165 #### Windows (GPO)
 166 ```
 167 Software\Policies\Mozilla\Firefox\AllowedDomainsForApps = "managedfirefox.com,example.com"
 168 ```
 169 #### Windows (Intune)
 170 OMA-URI:
 171 ```
 172 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/AllowedDomainsForApps
 173 ```
 174 Value (string):
 175 ```
 176 <enabled/>
 177 <data id="AllowedDomainsForApps" value="managedfirefox.com,example.com"/>
 178 ```
 179 #### macOS
 180 ```
 181 <dict>
 182   <key>AllowedDomainsForApps</key>
 183   <string>managedfirefox.com,example.com</string>
 184 </dict>
 185 ```
 186 #### policies.json
 187 ```
 188 {
 189   "policies": {
 190     "AllowedDomainsForApps": "managedfirefox.com,example.com"
 191   }
 192 }
 193 ```
 194 ### AppUpdateURL
 195
 196 Change the URL for application update if you are providing Firefox updates from a custom update server.
 197
 198 **Compatibility:** Firefox 62, Firefox ESR 60.2\
 199 **CCK2 Equivalent:** N/A\
 200 **Preferences Affected:** `app.update.url`
 201
 202 #### Windows (GPO)
 203 ```
 204 Software\Policies\Mozilla\Firefox\AppUpdateURL = "https://yoursite.com"
 205 ```
 206 #### Windows (Intune)
 207 OMA-URI:
 208 ```
 209 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/AppUpdateURL
 210 ```
 211 Value (string):
 212 ```
 213 <enabled/>
 214 <data id="AppUpdateURL" value="https://yoursite.com"/>
 215 ```
 216 #### macOS
 217 ```
 218 <dict>
 219   <key>AppUpdateURL</key>
 220   <string>https://yoursite.com</string>
 221 </dict>
 222 ```
 223 #### policies.json
 224 ```
 225 {
 226   "policies": {
 227     "AppUpdateURL": "https://yoursite.com"
 228   }
 229 }
 230 ```
 231 ### Authentication
 232
 233 Configure sites that support integrated authentication.
 234
 235 See [Integrated authentication](https://htmlpreview.github.io/?https://github.com/mdn/archived-content/blob/main/files/en-us/mozilla/integrated_authentication/raw.html) for more information.
 236
 237 `PrivateBrowsing` enables integrated authentication in private browsing.
 238
 239 **Compatibility:** Firefox 60, Firefox ESR 60 (AllowNonFQDN added in 62/60.2, AllowProxies added in 70/68.2, Locked added in 71/68.3, PrivateBrowsing added in 77/68.9)\
 240 **CCK2 Equivalent:** N/A\
 241 **Preferences Affected:** `network.negotiate-auth.trusted-uris`,`network.negotiate-auth.delegation-uris`,`network.automatic-ntlm-auth.trusted-uris`,`network.automatic-ntlm-auth.allow-non-fqdn`,`network.negotiate-auth.allow-non-fqdn`,`network.automatic-ntlm-auth.allow-proxies`,`network.negotiate-auth.allow-proxies`,`network.auth.private-browsing-sso`
 242
 243 #### Windows (GPO)
 244 ```
 245 Software\Policies\Mozilla\Firefox\Authentication\SPNEGO\1 = "mydomain.com"
 246 Software\Policies\Mozilla\Firefox\Authentication\SPNEGO\2 = "https://myotherdomain.com"
 247 Software\Policies\Mozilla\Firefox\Authentication\Delegated\1 = "mydomain.com"
 248 Software\Policies\Mozilla\Firefox\Authentication\Delegated\2 = "https://myotherdomain.com"
 249 Software\Policies\Mozilla\Firefox\Authentication\NTLM\1 = "mydomain.com"
 250 Software\Policies\Mozilla\Firefox\Authentication\NTLM\2 = "https://myotherdomain.com"
 251 Software\Policies\Mozilla\Firefox\Authentication\AllowNonFQDN\SPNEGO = 0x1 | 0x0
 252 Software\Policies\Mozilla\Firefox\Authentication\AllowNonFQDN\NTLM = 0x1 | 0x0
 253 Software\Policies\Mozilla\Firefox\Authentication\AllowProxies\SPNEGO = 0x1 | 0x0
 254 Software\Policies\Mozilla\Firefox\Authentication\AllowProxies\NTLM = 0x1 | 0x0
 255 Software\Policies\Mozilla\Firefox\Authentication\Locked = 0x1 | 0x0
 256 Software\Policies\Mozilla\Firefox\Authentication\PrivateBrowsing = 0x1 | 0x0
 257 ```
 258 #### Windows (Intune)
 259 OMA-URI:
 260 ```
 261 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Authentication/Authentication_SPNEGO
 262 ```
 263 Value (string):
 264 ```
 265 <enabled/>
 266 <data id="Authentication" value="1&#xF000;mydomain&#xF000;2&#xF000;https://myotherdomain.com"/>
 267 ```
 268 OMA-URI:
 269 ```
 270 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Authentication/Authentication_Delegated
 271 ```
 272 Value (string):
 273 ```
 274 <enabled/>
 275 <data id="Authentication" value="1&#xF000;mydomain&#xF000;2&#xF000;https://myotherdomain.com"/>
 276 ```
 277 OMA-URI:
 278 ```
 279 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Authentication/Authentication_NTLM
 280 ```
 281 Value (string):
 282 ```
 283 <enabled/>
 284 <data id="Authentication" value="1&#xF000;mydomain&#xF000;2&#xF000;https://myotherdomain.com"/>
 285 ```
 286 OMA-URI:
 287 ```
 288 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Authentication/Authentication_AllowNonFQDN
 289 ```
 290 Value (string):
 291 ```
 292 <enabled/>
 293 <data id="Authentication_AllowNonFQDN_NTLM" value="true | false"/>
 294 <data id="Authentication_AllowNonFQDN_SPNEGO" value="true | false"/>
 295 ```
 296 OMA-URI:
 297 ```
 298 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Authentication/Authentication_Locked
 299 ```
 300 Value (string):
 301 ```
 302 <enabled/> or <disabled/>
 303 ```
 304 OMA-URI:
 305 ```
 306 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Authentication/Authentication_PrivateBrowsing
 307 ```
 308 Value (string):
 309 ```
 310 <enabled/> or <disabled/>
 311 ```
 312 #### macOS
 313 ```
 314 <dict>
 315   <key>Authentication</key>
 316   <dict>
 317     <key>SPNEGO</key>
 318     <array>
 319       <string>mydomain.com</string>
 320       <string>https://myotherdomain.com</string>
 321     </array>
 322     <key>Delegated</key>
 323     <array>
 324       <string>mydomain.com</string>
 325       <string>https://myotherdomain.com</string>
 326     </array>
 327     <key>NTLM</key>
 328     <array>
 329       <string>mydomain.com</string>
 330       <string>https://myotherdomain.com</string>
 331     </array>
 332     <key>AllowNonFQDN</key>
 333       <dict>
 334       <key>SPNEGO</key>
 335       <true/> | <false/>
 336       <key>NTLM</key>
 337       <true/> | <false/>
 338     </dict>
 339     <key>AllowProxies</key>
 340       <dict>
 341       <key>SPNEGO</key>
 342       <true/> | <false/>
 343       <key>NTLM</key>
 344       <true/> | <false/>
 345     </dict>
 346     <key>Locked</key>
 347     <true/> | <false/>
 348     <key>PrivateBrowsing</key>
 349     <true/> | <false/>
 350   </dict>
 351 </dict>
 352 ```
 353 #### policies.json
 354 ```
 355 {
 356   "policies": {
 357     "Authentication": {
 358       "SPNEGO": ["mydomain.com", "https://myotherdomain.com"],
 359       "Delegated": ["mydomain.com", "https://myotherdomain.com"],
 360       "NTLM": ["mydomain.com", "https://myotherdomain.com"],
 361       "AllowNonFQDN": {
 362         "SPNEGO": true | false,
 363         "NTLM": true | false
 364       },
 365       "AllowProxies": {
 366         "SPNEGO": true | false,
 367         "NTLM": true | false
 368       },
 369       "Locked": true | false,
 370       "PrivateBrowsing": true | false
 371     }
 372   }
 373 }
 374 ```
 375 ### AutoLaunchProtocolsFromOrigins
 376 Define a list of external protocols that can be used from listed origins without prompting the user. The origin is the scheme plus the hostname.
 377
 378 The syntax of this policy is exactly the same as the [Chrome AutoLaunchProtocolsFromOrigins policy](https://cloud.google.com/docs/chrome-enterprise/policies/?policy=AutoLaunchProtocolsFromOrigins) except that you can only use valid origins (not just hostnames). This also means that you cannot specify an asterisk for all origins.
 379
 380 The schema is:
 381 ```
 382 {
 383  "items": {
 384   "properties": {
 385    "allowed_origins": {
 386     "items": {
 387      "type": "string"
 388     },
 389     "type": "array"
 390    },
 391    "protocol": {
 392     "type": "string"
 393    }
 394   },
 395   "required": [
 396    "protocol",
 397    "allowed_origins"
 398   ],
 399   "type": "object"
 400  },
 401  "type": "array"
 402 }
 403 ```
 404 **Compatibility:** Firefox 90, Firefox ESR 78.12\
 405 **CCK2 Equivalent:** N/A\
 406 **Preferences Affected:** N/A
 407
 408 #### Windows (GPO)
 409 Software\Policies\Mozilla\Firefox\AutoLaunchProtocolsFromOrigins (REG_MULTI_SZ) =
 410 ```
 411 [
 412   {
 413     "protocol": "zoommtg",
 414     "allowed_origins": [
 415       "https://somesite.zoom.us"
 416     ]
 417   }
 418 ]
 419 ```
 420 #### Windows (Intune)
 421 OMA-URI:
 422 ```
 423 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/AutoLaunchProtocolsFromOrigins
 424 ```
 425 Value (string):
 426 ```
 427 <enabled/>
 428 <data id="JSON" value='
 429 [
 430   {
 431     "protocol": "zoommtg",
 432     "allowed_origins": [
 433       "https://somesite.zoom.us"
 434     ]
 435   }
 436 ]'/>
 437 ```
 438 #### macOS
 439 ```
 440 <dict>
 441   <key>AutoLaunchProtocolsFromOrigins</key>
 442   <array>
 443     <dict>
 444       <key>protocol</key>
 445       <string>zoommtg</string>
 446       <key>allowed_origins</key>
 447       <array>
 448         <string>https://somesite.zoom.us</string>
 449       </array>
 450     </dict>
 451   </array>
 452 </dict>
 453 ```
 454 #### policies.json
 455 ```
 456 {
 457   "policies": {
 458     "AutoLaunchProtocolsFromOrigins": [{
 459       "protocol": "zoommtg",
 460       "allowed_origins": [
 461         "https://somesite.zoom.us"
 462       ]
 463     }]
 464   }
 465 }
 466 ```
 467 ### BackgroundAppUpdate
 468
 469 Enable or disable **automatic** application update **in the background**, when the application is not running.
 470
 471 If set to true, application updates may be installed (without user approval) in the background, even when the application is not running. The operating system might still require approval.
 472
 473 If set to false, the application will not try to install updates when the application is not running.
 474
 475 If you have disabled updates via `DisableAppUpdate` or disabled automatic updates via `AppAutoUpdate`, this policy has no effect.
 476
 477 **Compatibility:** Firefox 90 (Windows only)\
 478 **CCK2 Equivalent:** N/A\
 479 **Preferences Affected:** `app.update.background.enabled`
 480
 481 #### Windows (GPO)
 482 ```
 483 Software\Policies\Mozilla\Firefox\BackgroundAppUpdate = 0x1 | 0x0
 484 ```
 485 #### Windows (Intune)
 486 OMA-URI:
 487 ```
 488 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/BackgroundAppUpdate
 489 ```
 490 Value (string):
 491 ```
 492 <enabled/> or <disabled/>
 493 ```
 494 #### macOS
 495 ```
 496 <dict>
 497   <key>BackgroundAppUpdate</key>
 498   <true/> | <false/>
 499 </dict>
 500 ```
 501 #### policies.json
 502 ```
 503 {
 504   "policies": {
 505     "BackgroundAppUpdate": true | false
 506   }
 507 }
 508 ```
 509 ### BlockAboutAddons
 510
 511 Block access to the Add-ons Manager (about:addons).
 512
 513 **Compatibility:** Firefox 60, Firefox ESR 60\
 514 **CCK2 Equivalent:** `disableAddonsManager`\
 515 **Preferences Affected:** N/A
 516
 517 #### Windows (GPO)
 518 ```
 519 Software\Policies\Mozilla\Firefox\BlockAboutAddons = 0x1 | 0x0
 520 ```
 521 #### Windows (Intune)
 522 OMA-URI:
 523 ```
 524 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/BlockAboutAddons
 525 ```
 526 Value (string):
 527 ```
 528 <enabled/> or <disabled/>
 529 ```
 530 #### macOS
 531 ```
 532 <dict>
 533   <key>BlockAboutAddons</key>
 534   <true/> | <false/>
 535 </dict>
 536 ```
 537 #### policies.json
 538 ```
 539 {
 540   "policies": {
 541     "BlockAboutAddons": true | false
 542   }
 543 }
 544 ```
 545 ### BlockAboutConfig
 546
 547 Block access to about:config.
 548
 549 **Compatibility:** Firefox 60, Firefox ESR 60\
 550 **CCK2 Equivalent:** `disableAboutConfig`\
 551 **Preferences Affected:** N/A
 552
 553 #### Windows (GPO)
 554 ```
 555 Software\Policies\Mozilla\Firefox\BlockAboutConfig = 0x1 | 0x0
 556 ```
 557 #### Windows (Intune)
 558 OMA-URI:
 559 ```
 560 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/BlockAboutConfig
 561 ```
 562 Value (string):
 563 ```
 564 <enabled/> or <disabled/>
 565 ```
 566 #### macOS
 567 ```
 568 <dict>
 569   <key>BlockAboutConfig</key>
 570   <true/> | <false/>
 571 </dict>
 572 ```
 573 #### policies.json
 574 ```
 575 {
 576   "policies": {
 577     "BlockAboutConfig": true | false
 578   }
 579 }
 580 ```
 581 ### BlockAboutProfiles
 582
 583 Block access to About Profiles (about:profiles).
 584
 585 **Compatibility:** Firefox 60, Firefox ESR 60\
 586 **CCK2 Equivalent:** `disableAboutProfiles`\
 587 **Preferences Affected:** N/A
 588
 589 #### Windows (GPO)
 590 ```
 591 Software\Policies\Mozilla\Firefox\BlockAboutProfiles = 0x1 | 0x0
 592 ```
 593 #### Windows (Intune)
 594 OMA-URI:
 595 ```
 596 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/BlockAboutProfiles
 597 ```
 598 Value (string):
 599 ```
 600 <enabled/> or <disabled/>
 601 ```
 602 #### macOS
 603 ```
 604 <dict>
 605   <key>BlockAboutProfiles</key>
 606   <true/> | <false/>
 607 </dict>
 608 ```
 609 #### policies.json
 610 ```
 611 {
 612   "policies": {
 613     "BlockAboutProfiles": true | false
 614   }
 615 }
 616 ```
 617 ### BlockAboutSupport
 618
 619 Block access to Troubleshooting Information (about:support).
 620
 621 **Compatibility:** Firefox 60, Firefox ESR 60\
 622 **CCK2 Equivalent:** `disableAboutSupport`\
 623 **Preferences Affected:** N/A
 624
 625 #### Windows (GPO)
 626 ```
 627 Software\Policies\Mozilla\Firefox\BlockAboutSupport = 0x1 | 0x0
 628 ```
 629 #### Windows (Intune)
 630 OMA-URI:
 631 ```
 632 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/BlockAboutSupport
 633 ```
 634 Value (string):
 635 ```
 636 <enabled/> or <disabled/>
 637 ```
 638 #### macOS
 639 ```
 640 <dict>
 641   <key>BlockAboutSupport</key>
 642   <true/> | <false/>
 643 </dict>
 644 ```
 645 #### policies.json
 646 ```
 647 {
 648   "policies": {
 649     "BlockAboutSupport": true | false
 650   }
 651 }
 652 ```
 653 ### Bookmarks
 654
 655 Note: [`ManagedBookmarks`](#managedbookmarks) is the new recommended way to add bookmarks. This policy will continue to be supported.
 656
 657 Add bookmarks in either the bookmarks toolbar or menu. Only `Title` and `URL` are required. If `Placement` is not specified, the bookmark will be placed on the toolbar. If `Folder` is specified, it is automatically created and bookmarks with the same folder name are grouped together.
 658
 659 If you want to clear all bookmarks set with this policy, you can set the value to an empty array (```[]```). This can be on Windows via GPO or Intune with the new Bookmarks (JSON) policy.
 660
 661 **Compatibility:** Firefox 60, Firefox ESR 60\
 662 **CCK2 Equivalent:** `bookmarks.toolbar`,`bookmarks.menu`\
 663 **Preferences Affected:** N/A
 664
 665 #### Windows (GPO)
 666 ```
 667 Software\Policies\Mozilla\Firefox\Bookmarks\1\Title = "Example"
 668 Software\Policies\Mozilla\Firefox\Bookmarks\1\URL = "https://example.com"
 669 Software\Policies\Mozilla\Firefox\Bookmarks\1\Favicon = "https://example.com/favicon.ico"
 670 Software\Policies\Mozilla\Firefox\Bookmarks\1\Placement = "toolbar" | "menu"
 671 Software\Policies\Mozilla\Firefox\Bookmarks\1\Folder = "FolderName"
 672
 673 Software\Policies\Mozilla\Firefox\Bookmarks (REG_MULTI_SZ) =
 674 ```
 675 []
 676 ```
 677
 678 ```
 679 #### Windows (Intune)
 680 OMA-URI:
 681 ```
 682 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Bookmarks/Bookmark01
 683 ```
 684 Value (string):
 685 ```
 686 <enabled/>
 687 <data id="BookmarkTitle" value="Example"/>
 688 <data id="BookmarkURL" value="https://example.com"/>
 689 <data id="BookmarkFavicon" value="https://example.com/favicon.ico"/>
 690 <data id="BookmarkPlacement" value="toolbar | menu"/>
 691 <data id="BookmarkFolder" value="FolderName"/>
 692 ```
 693 OMA-URI:
 694 ```
 695 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/Bookmarks
 696 ```
 697 Value (string):
 698 ```
 699 <enabled/>
 700 <data id="JSON" value='[]'/>
 701 ```
 702 #### macOS
 703 ```
 704 <dict>
 705   <key>Bookmarks</key>
 706   <array>
 707     <dict>
 708       <key>Title</key>
 709       <string>Example</string>
 710       <key>URL</key>
 711       <string>https://example.com</string>
 712       <key>Favicon</key>
 713       <string>https://example.com/favicon.ico</string>
 714       <key>Placement</key>
 715       <string>toolbar | menu</string>
 716       <key>Folder</key>
 717       <string>FolderName</string>
 718     </dict>
 719   </array>
 720 </dict>
 721 ```
 722 #### policies.json
 723 ```
 724 {
 725   "policies": {
 726     "Bookmarks": [
 727       {
 728         "Title": "Example",
 729         "URL": "https://example.com",
 730         "Favicon": "https://example.com/favicon.ico",
 731         "Placement": "toolbar" | "menu",
 732         "Folder": "FolderName"
 733       }
 734     ]
 735   }
 736 }
 737 ```
 738 ### CaptivePortal
 739 Enable or disable the detection of captive portals.
 740
 741 **Compatibility:** Firefox 67, Firefox ESR 60.7\
 742 **CCK2 Equivalent:** N/A\
 743 **Preferences Affected:** `network.captive-portal-service.enabled`
 744
 745 #### Windows (GPO)
 746 ```
 747 Software\Policies\Mozilla\Firefox\CaptivePortal = 0x1 | 0x0
 748 ```
 749 #### Windows (Intune)
 750 OMA-URI:
 751 ```
 752 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/CaptivePortal
 753 ```
 754 Value (string):
 755 ```
 756 <enabled/> or <disabled/>
 757 ```
 758 #### macOS
 759 ```
 760 <dict>
 761   <key>CaptivePortal</key>
 762   <true/> | <false/>
 763 </dict>
 764 ```
 765 #### policies.json
 766 ```
 767 {
 768   "policies": {
 769     "CaptivePortal": true | false
 770   }
 771 }
 772 ```
 773 ### Certificates
 774
 775 ### Certificates | ImportEnterpriseRoots
 776
 777 Trust certificates that have been added to the operating system certificate store by a user or administrator.
 778
 779 Note: This policy only works on Windows and macOS. For Linux discussion, see [bug 1600509](https://bugzilla.mozilla.org/show_bug.cgi?id=1600509).
 780
 781 See https://support.mozilla.org/kb/setting-certificate-authorities-firefox for more detail.
 782
 783 **Compatibility:** Firefox 60, Firefox ESR 60 (macOS support in Firefox 63, Firefox ESR 68)\
 784 **CCK2 Equivalent:** N/A\
 785 **Preferences Affected:** `security.enterprise_roots.enabled`
 786
 787 #### Windows (GPO)
 788 ```
 789 Software\Policies\Mozilla\Firefox\Certificates\ImportEnterpriseRoots = 0x1 | 0x0
 790 ```
 791 #### Windows (Intune)
 792 OMA-URI:
 793 ```
 794 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Certificates/Certificates_ImportEnterpriseRoots
 795 ```
 796 Value (string):
 797 ```
 798 <enabled/> or <disabled/>
 799 ```
 800 #### macOS
 801 ```
 802 <dict>
 803   <key>Certificates</key>
 804   <dict>
 805     <key>ImportEnterpriseRoots</key>
 806     <true/> | <false/>
 807   </dict>
 808 </dict>
 809 ```
 810 #### policies.json
 811 ```
 812 {
 813   "policies": {
 814     "Certificates": {
 815       "ImportEnterpriseRoots": true | false
 816     }
 817   }
 818 }
 819 ```
 820 ### Certificates | Install
 821
 822 Install certificates into the Firefox certificate store. If only a filename is specified, Firefox searches for the file in the following locations:
 823
 824 - Windows
 825   - %USERPROFILE%\AppData\Local\Mozilla\Certificates
 826   - %USERPROFILE%\AppData\Roaming\Mozilla\Certificates
 827 - macOS
 828   - /Library/Application Support/Mozilla/Certificates
 829   - ~/Library/Application Support/Mozilla/Certificates
 830 - Linux
 831   - /usr/lib/mozilla/certificates
 832   - /usr/lib64/mozilla/certificates
 833   - ~/.mozilla/certificates
 834
 835 Starting with Firefox 65, Firefox 60.5 ESR, a fully qualified path can be used, including UNC paths. You should use the native path style for your operating system. We do not support using %USERPROFILE% or other environment variables on Windows.
 836
 837 If you are specifying the path in the policies.json file on Windows, you need to escape your backslashes (`\\`) which means that for UNC paths, you need to escape both (`\\\\`). If you use group policy, you only need one backslash.
 838
 839 Certificates are installed using the trust string `CT,CT,`.
 840
 841 Binary (DER) and ASCII (PEM) certificates are both supported.
 842
 843 **Compatibility:** Firefox 64, Firefox ESR 64\
 844 **CCK2 Equivalent:** `certs.ca`\
 845 **Preferences Affected:** N/A
 846
 847 #### Windows (GPO)
 848 ```
 849 Software\Policies\Mozilla\Firefox\Certificates\Install\1 = "cert1.der"
 850 Software\Policies\Mozilla\Firefox\Certificates\Install\2 = "C:\Users\username\cert2.pem"
 851 ```
 852 #### Windows (Intune)
 853 OMA-URI:
 854 ```
 855 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Certificates/Certificates_Install
 856 ```
 857 Value (string):
 858 ```
 859 <enabled/>
 860 <data id="Certificates_Install" value="1&#xF000;cert1.der&#xF000;2&#xF000;C:\Users\username\cert2.pem"/>
 861 ```
 862 #### macOS
 863 ```
 864 <dict>
 865   <key>Certificates</key>
 866   <dict>
 867     <key>Install</key>
 868     <array>
 869       <string>cert1.der</string>
 870       <string>/Users/username/cert2.pem</string>
 871     </array>
 872   </dict>
 873 </dict>
 874 ```
 875 #### policies.json
 876 ```
 877 {
 878   "policies": {
 879     "Certificates": {
 880       "Install": ["cert1.der", "/home/username/cert2.pem"]
 881     }
 882   }
 883 }
 884 ```
 885 ### Cookies
 886 Configure cookie preferences.
 887
 888 `Allow` is a list of origins (not domains) where cookies are always allowed. You must include http or https.
 889
 890 `AllowSession` is a list of origins (not domains) where cookies are only allowed for the current session. You must include http or https.
 891
 892 `Block` is a list of origins (not domains) where cookies are always blocked. You must include http or https.
 893
 894 `Default` determines whether cookies are accepted at all.
 895
 896 `AcceptThirdParty` determines how third-party cookies are handled.
 897
 898 `ExpireAtSessionEnd` determines when cookies expire.
 899
 900 `RejectTracker` only rejects cookies for trackers.
 901
 902 `Locked` prevents the user from changing cookie preferences.
 903
 904 **Compatibility:** Firefox 60, Firefox ESR 60 (RejectTracker added in Firefox 63, AllowSession added in Firefox 79/78.1)\
 905 **CCK2 Equivalent:** N/A\
 906 **Preferences Affected:** `network.cookie.cookieBehavior`, `network.cookie.lifetimePolicy`
 907
 908 #### Windows (GPO)
 909 ```
 910 Software\Policies\Mozilla\Firefox\Cookies\Allow\1 = "https://example.com"
 911 Software\Policies\Mozilla\Firefox\Cookies\AllowSession\1 = "https://example.edu"
 912 Software\Policies\Mozilla\Firefox\Cookies\Block\1 = "https://example.org"
 913 Software\Policies\Mozilla\Firefox\Cookies\Default = 0x1 | 0x0
 914 Software\Policies\Mozilla\Firefox\Cookies\AcceptThirdParty = "always" | "never" | "from-visited"
 915 Software\Policies\Mozilla\Firefox\Cookies\ExpireAtSessionEnd = 0x1 | 0x0
 916 Software\Policies\Mozilla\Firefox\Cookies\RejectTracker = 0x1 | 0x0
 917 Software\Policies\Mozilla\Firefox\Cookies\Locked = 0x1 | 0x0
 918 ```
 919 #### Windows (Intune)
 920 OMA-URI:
 921 ```
 922 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Cookies/Cookies_Allow
 923 ```
 924 Value (string):
 925 ```
 926 <enabled/>
 927 <data id="Cookies_Allow" value="1&#xF000;https://example.com"/>
 928 ```
 929 OMA-URI:
 930 ```
 931 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Cookies/Cookies_AllowSession
 932 ```
 933 Value (string):
 934 ```
 935 <enabled/>
 936 <data id="Cookies_Allow" value="1&#xF000;https://example.edu"/>
 937 ```
 938 OMA-URI:
 939 ```
 940 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Cookies/Cookies_Block
 941 ```
 942 Value (string):
 943 ```
 944 <enabled/>
 945 <data id="Cookies_Block" value="1&#xF000;https://example.org"/>
 946 ```
 947 OMA-URI:
 948 ```
 949 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Cookies/Cookies_Default
 950 ```
 951 Value (string):
 952 ```
 953 <enabled/> or <disabled/>
 954 ```
 955 OMA-URI:
 956 ```
 957 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Cookies/Cookies_AcceptThirdParty
 958 ```
 959 Value (string):
 960 ```
 961 <enabled/>
 962 <data id="Cookies_AcceptThirdParty" value="always | never | from-visited"/>
 963 ```
 964 OMA-URI:
 965 ```
 966 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Cookies/Cookies_ExpireAtSessionEnd
 967 ```
 968 Value (string):
 969 ```
 970 <enabled/> or <disabled/>
 971 ```
 972 OMA-URI:
 973 ```
 974 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Cookies/Cookies_RejectTracker
 975 ```
 976 Value (string):
 977 ```
 978 <enabled/> or <disabled/>
 979 ```
 980 OMA-URI:
 981 ```
 982 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Cookies/Cookies_Locked
 983 ```
 984 Value (string):
 985 ```
 986 <enabled/> or <disabled/>
 987 ```
 988 #### macOS
 989 ```
 990 <dict>
 991   <key>Cookies</key>
 992   <dict>
 993     <key>Allow</key>
 994     <array>
 995       <string>http://example.com</string>
 996     </array>
 997     <key>AllowSession</key>
 998     <array>
 999       <string>http://example.edu</string>
1000     </array>
1001     <key>Block</key>
1002     <array>
1003       <string>http://example.org</string>
1004     </array>
1005     <key>Default</key>
1006     <true/> | <false/>
1007     <key>AcceptThirdParty</key>
1008     <string>always | never | from-visited</string>
1009     <key>ExpireAtSessionEnd</key>
1010     <true/> | <false/>
1011     <key>RejectTracker</key>
1012     <true/> | <false/>
1013     <key>Locked</key>
1014     <true/> | <false/>
1015   </dict>
1016 </dict>
1017 ```
1018 #### policies.json
1019 ```
1020 {
1021   "policies": {
1022     "Cookies": {
1023       "Allow": ["http://example.org/"],
1024       "AllowSession": ["http://example.edu/"],
1025       "Block": ["http://example.edu/"],
1026       "Default": true | false,
1027       "AcceptThirdParty": "always" | "never" | "from-visited",
1028       "ExpireAtSessionEnd": true | false,
1029       "RejectTracker": true | false,
1030       "Locked": true | false
1031     }
1032   }
1033 }
1034 ```
1035 ### DisableSetDesktopBackground
1036 Remove the "Set As Desktop Background..." menuitem when right clicking on an image.
1037
1038 **Compatibility:** Firefox 60, Firefox ESR 60\
1039 **CCK2 Equivalent:** `removeSetDesktopBackground`\
1040 **Preferences Affected:** N/A
1041
1042 #### Windows (GPO)
1043 ```
1044 Software\Policies\Mozilla\Firefox\DisableSetDesktopBackground = 0x1 | 0x0
1045 ```
1046 #### Windows (Intune)
1047 OMA-URI:
1048 ```
1049 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableSetDesktopBackground
1050 ```
1051 Value (string):
1052 ```
1053 <enabled/> or <disabled/>
1054 ```
1055 #### macOS
1056 ```
1057 <dict>
1058   <key>DisableSetDesktopBackground</key>
1059   <true/> | <false/>
1060 </dict>
1061 ```
1062 #### policies.json
1063 ```
1064 {
1065   "policies": {
1066     "DisableSetDesktopBackground": true | false
1067   }
1068 }
1069 ```
1070 ### DisableMasterPasswordCreation
1071 Remove the master password functionality.
1072
1073 If this value is true, it works the same as setting [`PrimaryPassword`](#primarypassword) to false and removes the primary password functionality.
1074
1075 If both DisableMasterPasswordCreation and PrimaryPassword are used, DisableMasterPasswordCreation takes precedent.
1076
1077 **Compatibility:** Firefox 60, Firefox ESR 60\
1078 **CCK2 Equivalent:** `noMasterPassword`\
1079 **Preferences Affected:** N/A
1080
1081 #### Windows (GPO)
1082 ```
1083 Software\Policies\Mozilla\Firefox\DisableMasterPasswordCreation = 0x1 | 0x0
1084 ```
1085 #### Windows (Intune)
1086 OMA-URI:
1087 ```
1088 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableMasterPasswordCreation
1089 ```
1090 Value (string):
1091 ```
1092 <enabled/> or <disabled/>
1093 ```
1094 #### macOS
1095 ```
1096 <dict>
1097   <key>DisableMasterPasswordCreation</key>
1098   <true/> | <false/>
1099 </dict>
1100 ```
1101 #### policies.json
1102 ```
1103 {
1104   "policies": {
1105     "DisableMasterPasswordCreation": true | false
1106   }
1107 }
1108 ```
1109 ### DisableAppUpdate
1110 Turn off application updates within Firefox.
1111
1112 **Compatibility:** Firefox 60, Firefox ESR 60\
1113 **CCK2 Equivalent:** `disableFirefoxUpdates`\
1114 **Preferences Affected:** N/A
1115
1116 #### Windows (GPO)
1117 ```
1118 Software\Policies\Mozilla\Firefox\DisableAppUpdate = 0x1 | 0x0
1119 ```
1120 #### Windows (Intune)
1121 OMA-URI:
1122 ```
1123 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableAppUpdate
1124 ```
1125 Value (string):
1126 ```
1127 <enabled/> or <disabled/>
1128 ```
1129 #### macOS
1130 ```
1131 <dict>
1132   <key>DisableAppUpdate</key>
1133   <true/> | <false/>
1134 </dict>
1135 ```
1136 #### policies.json
1137 ```
1138 {
1139   "policies": {
1140     "DisableAppUpdate": true | false
1141   }
1142 }
1143 ```
1144 ### DisableBuiltinPDFViewer
1145 Disable the built in PDF viewer. PDF files are downloaded and sent externally.
1146
1147 **Compatibility:** Firefox 60, Firefox ESR 60\
1148 **CCK2 Equivalent:** `disablePDFjs`\
1149 **Preferences Affected:** `pdfjs.disabled`
1150
1151 #### Windows (GPO)
1152 ```
1153 Software\Policies\Mozilla\Firefox\DisableBuiltinPDFViewer = 0x1 | 0x0
1154 ```
1155 #### Windows (Intune)
1156 OMA-URI:
1157 ```
1158 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableBuiltinPDFViewer
1159 ```
1160 Value (string):
1161 ```
1162 <enabled/> or <disabled/>
1163 ```
1164 #### macOS
1165 ```
1166 <dict>
1167   <key>DisableBuiltinPDFViewer</key>
1168   <true/> | <false/>
1169 </dict>
1170 ```
1171 #### policies.json
1172 ```
1173 {
1174   "policies": {
1175     "DisableBuiltinPDFViewer": true | false
1176   }
1177 }
1178 ```
1179 ### DisabledCiphers
1180 Disable specific cryptographic ciphers.
1181
1182 **Preferences Affected:** `security.ssl3.dhe_rsa_aes_128_sha`, `security.ssl3.dhe_rsa_aes_256_sha`, `security.ssl3.ecdhe_ecdsa_aes_128_gcm_sha256`, `security.ssl3.ecdhe_rsa_aes_128_gcm_sha256`, `security.ssl3.ecdhe_rsa_aes_128_sha`, `security.ssl3.ecdhe_rsa_aes_256_sha`, `security.ssl3.rsa_aes_128_gcm_sha256`, `security.ssl3.rsa_aes_128_sha`, `security.ssl3.rsa_aes_256_gcm_sha384`, `security.ssl3.rsa_aes_256_sha`, `security.ssl3.rsa_des_ede3_sha`
1183
1184 ---
1185 **Note:**
1186
1187 This policy was updated in Firefox 78 to allow enabling ciphers as well. Setting the value to true disables the cipher, setting the value to false enables the cipher. Previously setting the value to true or false disabled the cipher.
1188
1189 ---
1190 **Compatibility:** Firefox 76, Firefox ESR 68.8 (TLS_RSA_WITH_AES_128_GCM_SHA256 and TLS_RSA_WITH_AES_256_GCM_SHA384 were added in Firefox 78)\
1191 **CCK2 Equivalent:** N/A\
1192 **Preferences Affected:** N/A
1193
1194 #### Windows (GPO)
1195 ```
1196 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_DHE_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0
1197 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_DHE_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0
1198 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0
1199 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0
1200 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 = 0x1 | 0x0
1201 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 = 0x1 | 0x0
1202 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0
1203 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0
1204 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_3DES_EDE_CBC_SHA = 0x1 | 0x0
1205 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_128_GCM_SHA256 = 0x1 | 0x0
1206 Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_256_GCM_SHA384 = 0x1 | 0x0
1207 ```
1208 #### Windows (Intune)
1209 OMA-URI:
1210 ```
1211 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_DHE_RSA_WITH_AES_128_CBC_SHA
1212 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_DHE_RSA_WITH_AES_256_CBC_SHA
1213 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
1214 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
1215 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
1216 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
1217 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_AES_128_CBC_SHA
1218 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_AES_256_CBC_SHA
1219 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_3DES_EDE_CBC_SHA
1220 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_AES_128_GCM_SHA256
1221 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_AES_256_GCM_SHA384
1222 ```
1223 Value (string):
1224 ```
1225 <enabled/> or <disabled/>
1226 ```
1227 #### macOS
1228 ```
1229 <dict>
1230   <key>DisabledCiphers</key>
1231     <dict>
1232       <key>TLS_DHE_RSA_WITH_AES_128_CBC_SHA</key>
1233       <true/> | <false/>
1234       <key>TLS_DHE_RSA_WITH_AES_256_CBC_SHA</key>
1235       <true/> | <false/>
1236       <key>TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA</key>
1237       <true/> | <false/>
1238       <key>TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA</key>
1239       <true/> | <false/>
1240       <key>TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256</key>
1241       <true/> | <false/>
1242       <key>TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256</key>
1243       <true/> | <false/>
1244       <key>TLS_RSA_WITH_AES_128_CBC_SHA</key>
1245       <true/> | <false/>
1246       <key>TLS_RSA_WITH_AES_256_CBC_SHA</key>
1247       <true/> | <false/>
1248       <key>TLS_RSA_WITH_3DES_EDE_CBC_SHA</key>
1249       <true/> | <false/>
1250       <key>TLS_RSA_WITH_AES_128_GCM_SHA256</key>
1251       <true/> | <false/>
1252       <key>TLS_RSA_WITH_AES_256_GCM_SHA384</key>
1253       <true/> | <false/>
1254     </dict>
1255 </dict>
1256 ```
1257 #### policies.json
1258 ```
1259 {
1260   "policies": {
1261     "DisabledCiphers": {
1262       "TLS_DHE_RSA_WITH_AES_128_CBC_SHA": true | false,
1263       "TLS_DHE_RSA_WITH_AES_256_CBC_SHA": true | false,
1264       "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA": true | false,
1265       "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA": true | false,
1266       "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256": true | false,
1267       "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256": true | false,
1268       "TLS_RSA_WITH_AES_128_CBC_SHA": true | false,
1269       "TLS_RSA_WITH_AES_256_CBC_SHA": true | false,
1270       "TLS_RSA_WITH_3DES_EDE_CBC_SHA": true | false,
1271       "TLS_RSA_WITH_AES_128_GCM_SHA256": true | false,
1272       "TLS_RSA_WITH_AES_256_GCM_SHA384": true | false
1273     }
1274   }
1275 }
1276 ```
1277 ### DisableDefaultBrowserAgent
1278 Prevent the default browser agent from taking any actions. Only applicable to Windows; other platforms don’t have the agent.
1279
1280 The browser agent is a Windows-only scheduled task which runs in the background to collect and submit data about the browser that the user has set as their OS default. More information is available [here](https://firefox-source-docs.mozilla.org/toolkit/mozapps/defaultagent/default-browser-agent/index.html).
1281
1282 **Compatibility:** Firefox 75, Firefox ESR 68.7 (Windows only)\
1283 **CCK2 Equivalent:** N/A\
1284 **Preferences Affected:** N/A
1285
1286 #### Windows (GPO)
1287 ```
1288 Software\Policies\Mozilla\Firefox\DisableDefaultBrowserAgent = 0x1 | 0x0
1289 ```
1290 #### Windows (Intune)
1291 OMA-URI:
1292 ```
1293 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableDefaultBrowserAgent
1294 ```
1295 Value (string):
1296 ```
1297 <enabled/> or <disabled/>
1298 ```
1299 #### policies.json
1300 ```
1301 {
1302   "policies": {
1303     "DisableDefaultBrowserAgent": true | false
1304   }
1305 }
1306 ```
1307 ### DisableDeveloperTools
1308 Remove access to all developer tools.
1309
1310 **Compatibility:** Firefox 60, Firefox ESR 60\
1311 **CCK2 Equivalent:** `removeDeveloperTools`\
1312 **Preferences Affected:** `devtools.policy.disabled`
1313
1314 #### Windows (GPO)
1315 ```
1316 Software\Policies\Mozilla\Firefox\DisableDeveloperTools = 0x1 | 0x0`
1317 ```
1318 #### Windows (Intune)
1319 OMA-URI:
1320 ```
1321 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableDeveloperTools
1322 ```
1323 Value (string):
1324 ```
1325 <enabled/> or <disabled/>
1326 ```
1327 #### macOS
1328 ```
1329 <dict>
1330   <key>DisableDeveloperTools</key>
1331   <true/> | <false/>
1332 </dict>
1333 ```
1334 #### policies.json
1335 ```
1336 {
1337   "policies": {
1338     "DisableDeveloperTools": true | false
1339   }
1340 }
1341 ```
1342 ### DisableFeedbackCommands
1343 Disable the menus for reporting sites (Submit Feedback, Report Deceptive Site).
1344
1345 **Compatibility:** Firefox 60, Firefox ESR 60\
1346 **CCK2 Equivalent:** N/A\
1347 **Preferences Affected:** N/A
1348
1349 #### Windows (GPO)
1350 ```
1351 Software\Policies\Mozilla\Firefox\DisableFeedbackCommands = 0x1 | 0x0
1352 ```
1353 #### Windows (Intune)
1354 OMA-URI:
1355 ```
1356 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableFeedbackCommands
1357 ```
1358 Value (string):
1359 ```
1360 <enabled/> or <disabled/>
1361 ```
1362 #### macOS
1363 ```
1364 <dict>
1365   <key>DisableFeedbackCommands</key>
1366   <true/> | <false/>
1367 </dict>
1368 ```
1369 #### policies.json
1370 ```
1371 {
1372   "policies": {
1373     "DisableFeedbackCommands": true | false
1374   }
1375 }
1376 ```
1377 ### DisableFirefoxScreenshots
1378 Remove access to Firefox Screenshots.
1379
1380 **Compatibility:** Firefox 60, Firefox ESR 60\
1381 **CCK2 Equivalent:** N/A\
1382 **Preferences Affected:** `extensions.screenshots.disabled`
1383
1384 #### Windows (GPO)
1385 ```
1386 Software\Policies\Mozilla\Firefox\DisableFirefoxScreenshots = 0x1 | 0x0
1387 ```
1388 #### Windows (Intune)
1389 OMA-URI:
1390 ```
1391 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableFirefoxScreenshots
1392 ```
1393 Value (string):
1394 ```
1395 <enabled/> or <disabled/>
1396 ```
1397 #### macOS
1398 ```
1399 <dict>
1400   <key>DisableFirefoxScreenshots</key>
1401   <true/> | <false/>
1402 </dict>
1403 ```
1404 #### policies.json
1405 ```
1406 {
1407   "policies": {
1408     "DisableFirefoxScreenshots": true | false
1409   }
1410 }
1411 ```
1412 ### DisableFirefoxAccounts
1413 Disable Firefox Accounts integration (Sync).
1414
1415 **Compatibility:** Firefox 60, Firefox ESR 60\
1416 **CCK2 Equivalent:** `disableSync`\
1417 **Preferences Affected:** `identity.fxaccounts.enabled`
1418
1419 #### Windows (GPO)
1420 ```
1421 Software\Policies\Mozilla\Firefox\DisableFirefoxAccounts = 0x1 | 0x0
1422 ```
1423 #### Windows (Intune)
1424 OMA-URI:
1425 ```
1426 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableFirefoxAccounts
1427 ```
1428 Value (string):
1429 ```
1430 <enabled/> or <disabled/>
1431 ```
1432 #### macOS
1433 ```
1434 <dict>
1435   <key>DisableFirefoxAccounts</key>
1436   <true/> | <false/>
1437 </dict>
1438 ```
1439 #### policies.json
1440 ```
1441 {
1442   "policies": {
1443     "DisableFirefoxAccounts": true | false
1444   }
1445 }
1446 ```
1447 ### DisableFirefoxStudies
1448 Disable Firefox studies (Shield).
1449
1450 **Compatibility:** Firefox 60, Firefox ESR 60\
1451 **CCK2 Equivalent:** N/A\
1452 **Preferences Affected:** N/A
1453
1454 #### Windows (GPO)
1455 ```
1456 Software\Policies\Mozilla\Firefox\DisableFirefoxStudies = 0x1 | 0x0
1457 ```
1458 #### Windows (Intune)
1459 OMA-URI:
1460 ```
1461 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableFirefoxStudies
1462 ```
1463 Value (string):
1464 ```
1465 <enabled/> or <disabled/>
1466 ```
1467 #### macOS
1468 ```
1469 <dict>
1470   <key>DisableFirefoxStudies</key>
1471   <true/> | <false/>
1472 </dict>
1473 ```
1474 #### policies.json
1475 ```
1476 {
1477   "policies": {
1478     "DisableFirefoxStudies": true | false
1479   }
1480 }
1481 ```
1482 ### DisableForgetButton
1483 Disable the "Forget" button.
1484
1485 **Compatibility:** Firefox 60, Firefox ESR 60\
1486 **CCK2 Equivalent:** `disableForget`\
1487 **Preferences Affected:** N/A
1488
1489 #### Windows (GPO)
1490 ```
1491 Software\Policies\Mozilla\Firefox\DisableForgetButton = 0x1 | 0x0
1492 ```
1493 #### Windows (Intune)
1494 OMA-URI:
1495 ```
1496 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableForgetButton
1497 ```
1498 Value (string):
1499 ```
1500 <enabled/> or <disabled/>
1501 ```
1502 #### macOS
1503 ```
1504 <dict>
1505   <key>DisableForgetButton</key>
1506   <true/> | <false/>
1507 </dict>
1508 ```
1509 #### policies.json
1510 ```
1511 {
1512   "policies": {
1513     "DisableForgetButton": true | false
1514   }
1515 }
1516 ```
1517 ### DisableFormHistory
1518 Turn off saving information on web forms and the search bar.
1519
1520 **Compatibility:** Firefox 60, Firefox ESR 60\
1521 **CCK2 Equivalent:** `disableFormFill`\
1522 **Preferences Affected:** `browser.formfill.enable`
1523
1524 #### Windows (GPO)
1525 ```
1526 Software\Policies\Mozilla\Firefox\DisableFormHistory = 0x1 | 0x0
1527 ```
1528 #### Windows (Intune)
1529 OMA-URI:
1530 ```
1531 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableFormHistory
1532 ```
1533 Value (string):
1534 ```
1535 <enabled/> or <disabled/>
1536 ```
1537 #### macOS
1538 ```
1539 <dict>
1540   <key>DisableFormHistory</key>
1541   <true/> | <false/>
1542 </dict>
1543 ```
1544 #### policies.json
1545 ```
1546 {
1547   "policies": {
1548     "DisableFormHistory": true | false
1549   }
1550 }
1551 ```
1552 ### DisablePasswordReveal
1553 Do not allow passwords to be shown in saved logins
1554
1555 **Compatibility:** Firefox 71, Firefox ESR 68.3\
1556 **CCK2 Equivalent:** N/A
1557 **Preferences Affected:** N/A
1558
1559 #### Windows (GPO)
1560 ```
1561 Software\Policies\Mozilla\Firefox\DisablePasswordReveal = 0x1 | 0x0
1562 ```
1563 #### Windows (Intune)
1564 OMA-URI:
1565 ```
1566 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisablePasswordReveal
1567 ```
1568 Value (string):
1569 ```
1570 <enabled/> or <disabled/>
1571 ```
1572 #### macOS
1573 ```
1574 <dict>
1575   <key>DisablePasswordReveal</key>
1576   <true/> | <false/>
1577 </dict>
1578 ```
1579 #### policies.json
1580 ```
1581 {
1582   "policies": {
1583     "DisablePasswordReveal": true | false
1584   }
1585 }
1586 ```
1587 ### DisablePocket
1588 Remove Pocket in the Firefox UI. It does not remove it from the new tab page.
1589
1590 **Compatibility:** Firefox 60, Firefox ESR 60\
1591 **CCK2 Equivalent:** `disablePocket`\
1592 **Preferences Affected:** `extensions.pocket.enabled`
1593
1594 #### Windows (GPO)
1595 ```
1596 Software\Policies\Mozilla\Firefox\DisablePocket = 0x1 | 0x0
1597 ```
1598 #### Windows (Intune)
1599 OMA-URI:
1600 ```
1601 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisablePocket
1602 ```
1603 Value (string):
1604 ```
1605 <enabled/> or <disabled/>
1606 ```
1607 #### macOS
1608 ```
1609 <dict>
1610   <key>DisablePocket</key>
1611   <true/> | <false/>
1612 </dict>
1613 ```
1614 #### policies.json
1615 ```
1616 {
1617   "policies": {
1618     "DisablePocket": true | false
1619   }
1620 }
1621 ```
1622 ### DisablePrivateBrowsing
1623 Remove access to private browsing.
1624
1625 **Compatibility:** Firefox 60, Firefox ESR 60\
1626 **CCK2 Equivalent:** `disablePrivateBrowsing`\
1627 **Preferences Affected:** N/A
1628
1629 #### Windows (GPO)
1630 ```
1631 Software\Policies\Mozilla\Firefox\DisablePrivateBrowsing = 0x1 | 0x0
1632 ```
1633 #### Windows (Intune)
1634 OMA-URI:
1635 ```
1636 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisablePrivateBrowsing
1637 ```
1638 Value (string):
1639 ```
1640 <enabled/> or <disabled/>
1641 ```
1642 #### macOS
1643 ```
1644 <dict>
1645   <key>DisablePrivateBrowsing</key>
1646   <true/> | <false/>
1647 </dict>
1648 ```
1649 #### policies.json
1650 ```
1651 {
1652   "policies": {
1653     "DisablePrivateBrowsing": true | false
1654   }
1655 }
1656 ```
1657 ### DisableProfileImport
1658 Disables the "Import data from another browser" option in the bookmarks window.
1659
1660 **Compatibility:** Firefox 60, Firefox ESR 60\
1661 **CCK2 Equivalent:** N/A\
1662 **Preferences Affected:** N/A
1663
1664 #### Windows (GPO)
1665 ```
1666 Software\Policies\Mozilla\Firefox\DisableProfileImport = 0x1 | 0x0
1667 ```
1668 #### Windows (Intune)
1669 OMA-URI:
1670 ```
1671 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableProfileImport
1672 ```
1673 Value (string):
1674 ```
1675 <enabled/> or <disabled/>
1676 ```
1677 #### macOS
1678 ```
1679 <dict>
1680   <key>DisableProfileImport</key>
1681   <true/> | <false/>
1682 </dict>
1683 ```
1684 #### policies.json
1685 ```
1686 {
1687   "policies": {
1688     "DisableProfileImport": true | false
1689   }
1690 }
1691 ```
1692 ### DisableProfileRefresh
1693 Disable the Refresh Firefox button on about:support and support.mozilla.org, as well as the prompt that displays offering to refresh Firefox when you haven't used it in a while.
1694
1695 **Compatibility:** Firefox 60, Firefox ESR 60\
1696 **CCK2 Equivalent:** `disableResetFirefox`\
1697 **Preferences Affected:** `browser.disableResetPrompt`
1698
1699 #### Windows (GPO)
1700 ```
1701 Software\Policies\Mozilla\Firefox\DisableProfileRefresh = 0x1 | 0x0
1702 ```
1703 #### Windows (Intune)
1704 OMA-URI:
1705 ```
1706 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableProfileRefresh
1707 ```
1708 Value (string):
1709 ```
1710 <enabled/> or <disabled/>
1711 ```
1712 #### macOS
1713 ```
1714 <dict>
1715   <key>DisableProfileRefresh</key>
1716   <true/> | <false/>
1717 </dict>
1718 ```
1719 #### policies.json
1720 ```
1721 {
1722   "policies": {
1723     "DisableProfileRefresh": true | false
1724   }
1725 }
1726 ```
1727 ### DisableSafeMode
1728 Disable safe mode within the browser.
1729
1730 On Windows, this disables safe mode via the command line as well.
1731
1732 **Compatibility:** Firefox 60, Firefox ESR 60 (Windows, macOS)\
1733 **CCK2 Equivalent:** `disableSafeMode`\
1734 **Preferences Affected:** N/A
1735
1736 #### Windows (GPO)
1737 ```
1738 Software\Policies\Mozilla\Firefox\DisableSafeMode = 0x1 | 0x0
1739 ```
1740 #### Windows (Intune)
1741 OMA-URI:
1742 ```
1743 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableSafeMode
1744 ```
1745 Value (string):
1746 ```
1747 <enabled/> or <disabled/>
1748 ```
1749 #### macOS
1750 ```
1751 <dict>
1752   <key>DisableSafeMode</key>
1753   <true/> | <false/>
1754 </dict>
1755 ```
1756 #### policies.json
1757 ```
1758 {
1759   "policies": {
1760     "DisableSafeMode": true | false
1761   }
1762 }
1763 ```
1764 ### DisableSecurityBypass
1765 Prevent the user from bypassing security in certain cases.
1766
1767 `InvalidCertificate` prevents adding an exception when an invalid certificate is shown.
1768
1769 `SafeBrowsing` prevents selecting "ignore the risk" and visiting a harmful site anyway.
1770
1771 **Compatibility:** Firefox 60, Firefox ESR 60\
1772 **CCK2 Equivalent:** N/A\
1773 **Preferences Affected:** `security.certerror.hideAddException`, `browser.safebrowsing.allowOverride`
1774
1775 #### Windows (GPO)
1776 ```
1777 Software\Policies\Mozilla\Firefox\DisableSecurityBypass\InvalidCertificate = 0x1 | 0x0
1778 Software\Policies\Mozilla\Firefox\DisableSecurityBypass\SafeBrowsing = 0x1 | 0x0
1779 ```
1780 #### Windows (Intune)
1781 OMA-URI:
1782 ```
1783 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/P_DisableSecurityBypass_InvalidCertificate
1784 ```
1785 Value (string):
1786 ```
1787 <enabled/> or <disabled/>
1788 ```
1789 OMA-URI:
1790 ```
1791 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/P_DisableSecurityBypass_SafeBrowsing
1792 ```
1793 Value (string):
1794 ```
1795 <enabled/> or <disabled/>
1796 ```
1797
1798 #### macOS
1799 ```
1800 <dict>
1801   <key>DisableSecurityBypass</key>
1802   <dict>
1803     <key>InvalidCertificate</key>
1804     <true/> | <false/>
1805     <key>SafeBrowsing</key>
1806     <true/> | <false/>
1807   </dict>
1808 </dict>
1809 ```
1810 #### policies.json
1811 ```
1812 {
1813   "policies": {
1814     "DisableSecurityBypass": {
1815       "InvalidCertificate": true | false,
1816       "SafeBrowsing": true | false
1817     }
1818   }
1819 }
1820 ```
1821 ### DisableSystemAddonUpdate
1822 Prevent system add-ons from being installed or update.
1823
1824 **Compatibility:** Firefox 60, Firefox ESR 60\
1825 **CCK2 Equivalent:** N/A\
1826 **Preferences Affected:** N/A
1827
1828 #### Windows (GPO)
1829 ```
1830 Software\Policies\Mozilla\Firefox\DisableSystemAddonUpdate = 0x1 | 0x0
1831 ```
1832 #### Windows (Intune)
1833 OMA-URI:
1834 ```
1835 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableSystemAddonUpdate
1836 ```
1837 Value (string):
1838 ```
1839 <enabled/> or <disabled/>
1840 ```
1841 #### macOS
1842 ```
1843 <dict>
1844   <key>DisableSystemAddonUpdate</key>
1845   <true/> | <false/>
1846 </dict>
1847 ```
1848 #### policies.json
1849 ```
1850 {
1851   "policies": {
1852     "DisableSystemAddonUpdate": true | false
1853   }
1854 }
1855 ```
1856 ### DisableTelemetry
1857 Prevent the upload of telemetry data.
1858
1859 As of Firefox 83 and Firefox ESR 78.5, local storage of telemetry data is disabled as well.
1860
1861 Mozilla recommends that you do not disable telemetry. Information collected through telemetry helps us build a better product for businesses like yours.
1862
1863 **Compatibility:** Firefox 60, Firefox ESR 60\
1864 **CCK2 Equivalent:** `disableTelemetry`\
1865 **Preferences Affected:** `datareporting.healthreport.uploadEnabled`, `datareporting.policy.dataSubmissionEnabled`, `toolkit.telemetry.archive.enabled`
1866
1867 #### Windows (GPO)
1868 ```
1869 Software\Policies\Mozilla\Firefox\DisableTelemetry = 0x1 | 0x0
1870 ```
1871 #### Windows (Intune)
1872 OMA-URI:
1873 ```
1874 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableTelemetry
1875 ```
1876 Value (string):
1877 ```
1878 <enabled/> or <disabled/>
1879 ```
1880 #### macOS
1881 ```
1882 <dict>
1883   <key>DisableTelemetry</key>
1884   <true/> | <false/>
1885 </dict>
1886 ```
1887 #### policies.json
1888 ```
1889 {
1890   "policies": {
1891     "DisableTelemetry": true | false
1892   }
1893 }
1894 ```
1895 ### DisplayBookmarksToolbar
1896 Set the initial state of the bookmarks toolbar. A user can still hide it and it will stay hidden.
1897
1898 **Compatibility:** Firefox 60, Firefox ESR 60\
1899 **CCK2 Equivalent:** `displayBookmarksToolbar`\
1900 **Preferences Affected:** N/A
1901
1902 #### Windows (GPO)
1903 ```
1904 Software\Policies\Mozilla\Firefox\DisplayBookmarksToolbar = 0x1 | 0x0
1905 ```
1906 #### Windows (Intune)
1907 OMA-URI:
1908 ```
1909 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisplayBookmarksToolbar
1910 ```
1911 Value (string):
1912 ```
1913 <enabled/> or <disabled/>
1914 ```
1915 #### macOS
1916 ```
1917 <dict>
1918   <key>DisplayBookmarksToolbar</key>
1919   <true/> | <false/>
1920 </dict>
1921 ```
1922 #### policies.json
1923 ```
1924 {
1925   "policies": {
1926     "DisplayBookmarksToolbar": true | false
1927   }
1928 }
1929 ```
1930 ### DisplayMenuBar (Deprecated)
1931 Set the initial state of the menubar. A user can still hide it and it will stay hidden.
1932
1933 **Compatibility:** Firefox 60, Firefox ESR 60 (Windows, some Linux)\
1934 **CCK2 Equivalent:** `displayMenuBar`\
1935 **Preferences Affected:** N/A
1936
1937 #### Windows (GPO)
1938 ```
1939 Software\Policies\Mozilla\Firefox\DisplayMenuBar = 0x1 | 0x0
1940 ```
1941 #### macOS
1942 ```
1943 <dict>
1944   <key>DisplayMenuBar</key>
1945   <true/> | <false/>
1946 </dict>
1947 ```
1948 #### policies.json
1949 ```
1950 {
1951   "policies": {
1952     "DisplayMenuBar": true | false
1953   }
1954 }
1955 ```
1956 ### DisplayMenuBar
1957 Set the state of the menubar.
1958
1959 `always` means the menubar is shown and cannot be hidden.
1960
1961 `never` means the menubar is hidden and cannot be shown.
1962
1963 `default-on` means the menubar is on by default but can be hidden.
1964
1965 `default-off` means the menubar is off by default but can be shown.
1966
1967 **Compatibility:** Firefox 73, Firefox ESR 68.5 (Windows, some Linux)\
1968 **CCK2 Equivalent:** `displayMenuBar`\
1969 **Preferences Affected:** N/A
1970
1971 #### Windows (GPO)
1972 ```
1973 Software\Policies\Mozilla\Firefox\DisplayMenuBar = "always", "never", "default-on", "default-off"
1974 ```
1975 #### Windows (Intune)
1976 OMA-URI:
1977 ```
1978 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisplayMenuBar_Enum
1979 ```
1980 Value (string):
1981 ```
1982 <enabled/>
1983 <data id="DisplayMenuBar" value="always | never | default-on | default-off"/>
1984 ```
1985 #### macOS
1986 ```
1987 <dict>
1988   <key>DisplayMenuBar</key>
1989   <string>always | never | default-on | default-off</string>
1990 </dict>
1991 ```
1992 #### policies.json
1993 ```
1994 {
1995   "policies": {
1996     "DisplayMenuBar": "always", "never", "default-on", "default-off"
1997   }
1998 }
1999 ```
2000 ### DNSOverHTTPS
2001 Configure DNS over HTTPS.
2002
2003 `Enabled` determines whether DNS over HTTPS is enabled
2004
2005 `ProviderURL` is a URL to another provider.
2006
2007 `Locked` prevents the user from changing DNS over HTTPS preferences.
2008
2009 `ExcludedDomains` excludes domains from DNS over HTTPS.
2010
2011 **Compatibility:** Firefox 63, Firefox ESR 68 (ExcludedDomains added in 75/68.7)\
2012 **CCK2 Equivalent:** N/A\
2013 **Preferences Affected:** `network.trr.mode`, `network.trr.uri`
2014
2015 #### Windows (GPO)
2016 ```
2017 Software\Policies\Mozilla\Firefox\DNSOverHTTPS\Enabled = 0x1 | 0x0
2018 Software\Policies\Mozilla\Firefox\DNSOverHTTPS\ProviderURL = "URL_TO_ALTERNATE_PROVIDER"
2019 Software\Policies\Mozilla\Firefox\DNSOverHTTPS\Locked = 0x1 | 0x0
2020 Software\Policies\Mozilla\Firefox\DNSOverHTTPS\ExcludedDomains\1 = "example.com"
2021 ```
2022 #### Windows (Intune)
2023 OMA-URI:
2024 ```
2025 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DNSOverHTTPS/DNSOverHTTPS_Enabled
2026 ```
2027 Value (string):
2028 ```
2029 <enabled/> or <disabled/>
2030 ```
2031 OMA-URI:
2032 ```
2033 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DNSOverHTTPS/DNSOverHTTPS_ProviderURL
2034 ```
2035 Value (string):
2036 ```
2037 <enabled/>
2038 <data id="String" value="URL_TO_ALTERNATE_PROVIDER"/>
2039 ```
2040 OMA-URI:
2041 ```
2042 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DNSOverHTTPS/DNSOverHTTPS_Locked
2043 ```
2044 Value (string):
2045 ```
2046 <enabled/> or <disabled/>
2047 ```
2048 OMA-URI:
2049 ```
2050 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DNSOverHTTPS/DNSOverHTTPS_ExcludedDomains
2051 ```
2052 Value (string):
2053 ```
2054 <enabled/>
2055 <data id="List" value="1&#xF000;example.com"/>
2056 ```
2057 #### macOS
2058 ```
2059 <dict>
2060   <key>DNSOverHTTPS</key>
2061   <dict>
2062     <key>Enabled</key>
2063     <true/> | <false/>
2064     <key>ProviderURL</key>
2065     <string>URL_TO_ALTERNATE_PROVIDER</string>
2066     <key>Locked</key>
2067     <true/> | <false/>
2068     <key>ExcludedDomains</key>
2069     <array>
2070       <string>example.com</string>
2071     </array>
2072   </dict>
2073 </dict>
2074 ```
2075 #### policies.json
2076 ```
2077 {
2078   "policies": {
2079     "DNSOverHTTPS": {
2080       "Enabled":  true | false,
2081       "ProviderURL": "URL_TO_ALTERNATE_PROVIDER",
2082       "Locked": true | false,
2083       "ExcludedDomains": ["example.com"]
2084     }
2085   }
2086 }
2087 ```
2088 ### DontCheckDefaultBrowser
2089 Don't check if Firefox is the default browser at startup.
2090
2091 **Compatibility:** Firefox 60, Firefox ESR 60\
2092 **CCK2 Equivalent:** `dontCheckDefaultBrowser`\
2093 **Preferences Affected:** `browser.shell.checkDefaultBrowser`
2094
2095 #### Windows (GPO)
2096 ```
2097 Software\Policies\Mozilla\Firefox\DontCheckDefaultBrowser = 0x1 | 0x0
2098 ```
2099 #### Windows (Intune)
2100 OMA-URI:
2101 ```
2102 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DontCheckDefaultBrowser
2103 ```
2104 Value (string):
2105 ```
2106 <enabled/> or <disabled/>
2107 ```
2108 #### macOS
2109 ```
2110 <dict>
2111   <key>DontCheckDefaultBrowser</key>
2112   <true/> | <false/>
2113 </dict>
2114 ```
2115 #### policies.json
2116 ```
2117 {
2118   "policies": {
2119     "DontCheckDefaultBrowser": true | false
2120   }
2121 }
2122 ```
2123 ### DefaultDownloadDirectory
2124 Set the default download directory.
2125
2126 You can use ${home} for the native home directory.
2127
2128 **Compatibility:** Firefox 68, Firefox ESR 68\
2129 **CCK2 Equivalent:** N/A\
2130 **Preferences Affected:** `browser.download.dir`, `browser.download.folderList`
2131
2132 #### Windows (GPO)
2133 ```
2134 Software\Policies\Mozilla\Firefox\DefaultDownloadDirectory = "${home}\Downloads"
2135 ```
2136 #### Windows (Intune)
2137 OMA-URI:
2138 ```
2139 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DefaultDownloadDirectory
2140 ```
2141 Value (string):
2142 ```
2143 <enabled/>
2144 <data id="Preferences_String" value="${home}\Downloads"/>
2145 ```
2146 #### macOS
2147 ```
2148 <dict>
2149   <key>DefaultDownloadDirectory</key>
2150   <string>${home}/Downloads</string>
2151 </dict>
2152 ```
2153 #### policies.json (macOS and Linux)
2154 ```
2155 {
2156   "policies": {
2157     "DefaultDownloadDirectory": "${home}/Downloads"
2158 }
2159 ```
2160 #### policies.json (Windows)
2161 ```
2162 {
2163   "policies": {
2164     "DefaultDownloadDirectory": "${home}\\Downloads"
2165 }
2166 ```
2167 ### DownloadDirectory
2168 Set and lock the download directory.
2169
2170 You can use ${home} for the native home directory.
2171
2172 **Compatibility:** Firefox 68, Firefox ESR 68\
2173 **CCK2 Equivalent:** N/A\
2174 **Preferences Affected:** `browser.download.dir`, `browser.download.folderList`, `browser.download.useDownloadDir`
2175
2176 #### Windows (GPO)
2177 ```
2178 Software\Policies\Mozilla\Firefox\DownloadDirectory = "${home}\Downloads"
2179 ```
2180 #### Windows (Intune)
2181 OMA-URI:
2182 ```
2183 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DownloadDirectory
2184 ```
2185 Value (string):
2186 ```
2187 <enabled/>
2188 <data id="Preferences_String" value="${home}\Downloads"/>
2189 ```
2190 #### macOS
2191 ```
2192 <dict>
2193   <key>DownloadDirectory</key>
2194   <string>${home}/Downloads</string>
2195 </dict>
2196 ```
2197 #### policies.json (macOS and Linux)
2198 ```
2199 {
2200   "policies": {
2201     "DownloadDirectory": "${home}/Downloads"
2202 }
2203 ```
2204 #### policies.json (Windows)
2205 ```
2206 {
2207   "policies": {
2208     "DownloadDirectory": "${home}\\Downloads"
2209 }
2210 ```
2211 ### EnableTrackingProtection
2212 Configure tracking protection.
2213
2214 If this policy is not configured, tracking protection is not enabled by default in the browser, but it is enabled by default in private browsing and the user can change it.
2215
2216 If `Value` is set to false, tracking protection is disabled and locked in both the regular browser and private browsing.
2217
2218 If `Value` is set to true, tracking protection is enabled by default in both the regular browser and private browsing and the `Locked` value determines whether or not a user can change it.
2219
2220 If `Cryptomining` is set to true, cryptomining scripts on websites are blocked.
2221
2222 If `Fingerprinting` is set to true, fingerprinting scripts on websites are blocked.
2223
2224 `Exceptions` are origins for which tracking protection is not enabled.
2225
2226 **Compatibility:** Firefox 60, Firefox ESR 60 (Cryptomining and Fingerprinting added in 70/68.2, Exceptions added in 73/68.5)\
2227 **CCK2 Equivalent:** N/A\
2228 **Preferences Affected:** `privacy.trackingprotection.enabled`, `privacy.trackingprotection.pbmode.enabled`, `privacy.trackingprotection.cryptomining.enabled`, `privacy.trackingprotection.fingerprinting.enabled`
2229
2230 #### Windows (GPO)
2231 ```
2232 Software\Policies\Mozilla\Firefox\EnableTrackingProtection\Value = 0x1 | 0x0
2233 Software\Policies\Mozilla\Firefox\EnableTrackingProtection\Locked = 0x1 | 0x0
2234 Software\Policies\Mozilla\Firefox\EnableTrackingProtection\Cryptomining = 0x1 | 0x0
2235 Software\Policies\Mozilla\Firefox\EnableTrackingProtection\Fingerprinting = 0x1 | 0x0
2236 Software\Policies\Mozilla\Firefox\EnableTrackingProtection\Exceptions\1 = "https://example.com"
2237 ```
2238 #### Windows (Intune)
2239 OMA-URI:
2240 ```
2241 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~TrackingProtection/A_TrackingProtection_Value
2242 ```
2243 Value (string):
2244 ```
2245 <enabled/> or <disabled/>
2246 ```
2247 OMA-URI:
2248 ```
2249 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~TrackingProtection/B_TrackingProtection_Cryptomining
2250 ```
2251 Value (string):
2252 ```
2253 <enabled/> or <disabled/>
2254 ```
2255 OMA-URI:
2256 ```
2257 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~TrackingProtection/C_TrackingProtection_Fingerprinting
2258 ```
2259 Value (string):
2260 ```
2261 <enabled/> or <disabled/>
2262 ```
2263 OMA-URI:
2264 ```
2265 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~TrackingProtection/D_TrackingProtection_Exceptions
2266 ```
2267 Value (string):
2268 ```
2269 <data id="TrackingProtection_Exceptions" value="1&#xF000;https://example.com"/>
2270 ```
2271 OMA-URI:
2272 ```
2273 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~TrackingProtection/E_TrackingProtection_Locked
2274 ```
2275 Value (string):
2276 ```
2277 <enabled/> or <disabled/>
2278 ```
2279 #### macOS
2280 ```
2281 <dict>
2282   <key>EnableTrackingProtection</key>
2283   <dict>
2284     <key>Value</key>
2285     <true/> | <false/>
2286     <key>Locked</key>
2287     <true/> | <false/>
2288     <key>Cryptomining</key>
2289     <true/> | <false/>
2290     <key>Fingerprinting</key>
2291     <true/> | <false/>
2292     <key>Exceptions</key>
2293     <array>
2294       <string>https://example.com</string>
2295     </array>
2296   </dict>
2297 </dict>
2298 ```
2299 #### policies.json
2300 ```
2301 {
2302   "policies": {
2303     "EnableTrackingProtection": {
2304       "Value": true | false,
2305       "Locked": true | false,
2306       "Cryptomining": true | false,
2307       "Fingerprinting": true | false,
2308       "Exceptions": ["https://example.com"]
2309     }
2310   }
2311 }
2312 ```
2313 ### EncryptedMediaExtensions
2314 Enable or disable Encrypted Media Extensions and optionally lock it.
2315
2316 If `Enabled` is set to false, encrypted media extensions (like Widevine) are not downloaded by Firefox unless the user consents to installing them.
2317
2318 If `Locked` is set to true and `Enabled` is set to false, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
2319
2320 **Compatibility:** Firefox 77, Firefox ESR 68.9\
2321 **CCK2 Equivalent:** N/A\
2322 **Preferences Affected:** `media.eme.enabled`
2323
2324 #### Windows (GPO)
2325 ```
2326 Software\Policies\Mozilla\Firefox\EncryptedMediaExtensions\Enabled = 0x1 | 0x0
2327 Software\Policies\Mozilla\Firefox\EncryptedMediaExtensions\Locked = 0x1 | 0x0
2328 ```
2329 #### Windows (Intune)
2330 OMA-URI:
2331 ```
2332 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~EncryptedMediaExtensions/EncryptedMediaExtensions_Enabled
2333 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~EncryptedMediaExtensions/EncryptedMediaExtensions_Locked
2334 ```
2335 Value (string):
2336 ```
2337 <enabled/>or <disabled/>
2338 ```
2339 #### macOS
2340 ```
2341 <dict>
2342   <key>EncryptedMediaExtensions</key>
2343   <dict>
2344     <key>Enabled</key>
2345     <true/> | <false/>
2346     <key>Locked</key>
2347     <true/> | <false/>
2348   </dict>
2349 </dict>
2350 ```
2351 #### policies.json
2352 ```
2353 {
2354   "policies": {
2355     "EncryptedMediaExtensions": {
2356       "Enabled": true | false,
2357       "Locked": true | false
2358     }
2359   }
2360 }
2361 ```
2362 ### EnterprisePoliciesEnabled
2363 Enable policy support on macOS.
2364
2365 **Compatibility:** Firefox 63, Firefox ESR 60.3 (macOS only)\
2366 **CCK2 Equivalent:** N/A\
2367 **Preferences Affected:** N/A
2368
2369 #### macOS
2370 ```
2371 <dict>
2372   <key>EnterprisePoliciesEnabled</key>
2373   <true/>
2374 </dict>
2375 ```
2376 ### Extensions
2377 Control the installation, uninstallation and locking of extensions.
2378
2379 While this policy is not technically deprecated, it is recommended that you use the **[`ExtensionSettings`](#extensionsettings)** policy. It has the same functionality and adds more. It does not support native paths, though, so you'll have to use file:/// URLs.
2380
2381 `Install` is a list of URLs or native paths for extensions to be installed.
2382
2383 `Uninstall` is a list of extension IDs that should be uninstalled if found.
2384
2385 `Locked` is a list of extension IDs that the user cannot disable or uninstall.
2386
2387 **Compatibility:** Firefox 60, Firefox ESR 60\
2388 **CCK2 Equivalent:** `addons`\
2389 **Preferences Affected:** N/A
2390
2391 #### Windows (GPO)
2392 ```
2393 Software\Policies\Mozilla\Firefox\Extensions\Install\1 = "https://addons.mozilla.org/firefox/downloads/somefile.xpi"
2394 Software\Policies\Mozilla\Firefox\Extensions\Install\2 = "//path/to/xpi"
2395 Software\Policies\Mozilla\Firefox\Extensions\Uninstall\1 = "bad_addon_id@mozilla.org"
2396 Software\Policies\Mozilla\Firefox\Extensions\Locked\1 = "addon_id@mozilla.org"
2397 ```
2398 #### Windows (Intune)
2399 OMA-URI:
2400 ```
2401 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/Extensions_Install
2402 ```
2403 Value (string):
2404 ```
2405 <enabled/>
2406 <data id="Extensions" value="1&#xF000;https://addons.mozilla.org/firefox/downloads/somefile.xpi&#xF000;2&#xF000;//path/to/xpi"/>
2407 ```
2408 OMA-URI:
2409 ```
2410 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/Extensions_Uninstall
2411 ```
2412 Value (string):
2413 ```
2414 <enabled/>
2415 <data id="Extensions" value="1&#xF000;bad_addon_id@mozilla.org"/>
2416 ```
2417 OMA-URI:
2418 ```
2419 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/Extensions_Locked
2420 ```
2421 Value (string):
2422 ```
2423 <enabled/>
2424 <data id="Extensions" value="1&#xF000;addon_id@mozilla.org"/>
2425 ```
2426 #### macOS
2427 ```
2428 <dict>
2429   <key>Extensions</key>
2430   <dict>
2431     <key>Install</key>
2432     <array>
2433       <string>https://addons.mozilla.org/firefox/downloads/somefile.xpi</string>
2434       <string>//path/to/xpi</string>
2435     </array>
2436     <key>Uninstall</key>
2437     <array>
2438       <string>bad_addon_id@mozilla.org</string>
2439     </array>
2440     <key>Locked</key>
2441     <array>
2442       <string>addon_id@mozilla.org</string>
2443     </array>
2444   </dict>
2445 </dict>
2446 ```
2447 #### policies.json
2448 ```
2449 {
2450   "policies": {
2451     "Extensions": {
2452       "Install": ["https://addons.mozilla.org/firefox/downloads/somefile.xpi", "//path/to/xpi"],
2453       "Uninstall": ["bad_addon_id@mozilla.org"],
2454       "Locked":  ["addon_id@mozilla.org"]
2455     }
2456   }
2457 }
2458 ```
2459 ### ExtensionSettings
2460 Manage all aspects of extensions. This policy is based heavily on the [Chrome policy](https://dev.chromium.org/administrators/policy-list-3/extension-settings-full) of the same name.
2461
2462 This policy maps an extension ID to its configuration. With an extension ID, the configuration will be applied to the specified extension only. A default configuration can be set for the special ID "*", which will apply to all extensions that don't have a custom configuration set in this policy.
2463
2464 To obtain an extension ID, install the extension and go to about:support. You will see the ID in the Extensions section. I've also created an extension that makes it easy to find the ID of extensions on AMO. You can download it [here](https://github.com/mkaply/queryamoid/releases/tag/v0.1).
2465
2466 The configuration for each extension is another dictionary that can contain the fields documented below.
2467
2468 | Name | Description |
2469 | --- | --- |
2470 | `installation_mode` | Maps to a string indicating the installation mode for the extension. The valid strings are `allowed`,`blocked`,`force_installed`, and `normal_installed`.
2471 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`allowed` | Allows the extension to be installed by the user. This is the default behavior. There is no need for an install_url; it will automatically be allowed based on the ID.
2472 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`blocked`| Blocks installation of the extension and removes it from the device if already installed.
2473 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`force_installed`| The extension is automatically installed and can't be removed by the user. This option is not valid for the default configuration and requires an install_url.
2474 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`normal_installed`| The extension is automatically installed but can be disabled by the user. This option is not valid for the default configuration and requires an install_url.
2475 | `install_url`| Maps to a URL indicating where Firefox can download a force_installed or normal_installed extension.  If installing from the local file system, use a [```file:///``` URL](https://en.wikipedia.org/wiki/File_URI_scheme). If installing from the addons.mozilla.org, use the following URL (substituting SHORT_NAME from the URL on AMO), https://addons.mozilla.org/firefox/downloads/latest/SHORT_NAME/latest.xpi. Languages packs are available from https://releases.mozilla.org/pub/firefox/releases/VERSION/PLATFORM/xpi/LANGUAGE.xpi. If you need to update the extension, you can change the name of the extension and it will be automatically updated. Extensions installed from file URLs will additional be updated when their internal version changes.
2476 | `install_sources` | A list of sources from which installing extensions is allowed. **This is unnecessary if you are only allowing the installation of certain extensions by ID.** Each item in this list is an extension-style match pattern. Users will be able to easily install items from any URL that matches an item in this list. Both the location of the *.xpi file and the page where the download is started from (i.e.  the referrer) must be allowed by these patterns. This setting can be used only for the default configuration.
2477 | `allowed_types` | This setting whitelists the allowed types of extension/apps that can be installed in Firefox. The value is a list of strings, each of which should be one of the following: "extension", "theme", "dictionary", "locale" This setting can be used only for the default configuration.
2478 | `blocked_install_message` | This maps to a string specifying the error message to display to users if they're blocked from installing an extension. This setting allows you to append text to the generic error message displayed when the extension is blocked. This could be be used to direct users to your help desk, explain why a particular extension is blocked, or something else. This setting can be used only for the default configuration.
2479 | `restricted_domains` | An array of domains on which content scripts can't be run. This setting can be used only for the default configuration.
2480 | `updates_disabled` | (Firefox 89, Firefox ESR 78.11) Boolean that indicates whether or not to disable automatic updates for an individual extension.
2481
2482 **Compatibility:** Firefox 69, Firefox ESR 68.1 (As of Firefox 85, Firefox ESR 78.7, installing a theme makes it the default.)\
2483 **CCK2 Equivalent:** N/A\
2484 **Preferences Affected:** N/A
2485
2486 #### Windows (GPO)
2487 Software\Policies\Mozilla\Firefox\ExtensionSettings (REG_MULTI_SZ) =
2488 ```
2489 {
2490   "*": {
2491     "blocked_install_message": "Custom error message.",
2492     "install_sources": ["about:addons","https://addons.mozilla.org/"],
2493     "installation_mode": "blocked",
2494     "allowed_types": ["extension"]
2495   },
2496   "uBlock0@raymondhill.net": {
2497     "installation_mode": "force_installed",
2498     "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi"
2499   },
2500   "https-everywhere@eff.org": {
2501     "installation_mode": "allowed"
2502   }
2503 }
2504 ```
2505 #### Windows (Intune)
2506 OMA-URI:
2507 ```
2508 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/ExtensionSettings
2509 ```
2510 Value (string):
2511 ```
2512 <enabled/>
2513 <data id="ExtensionSettings" value='
2514 {
2515   "*": {
2516     "blocked_install_message": "Custom error message.",
2517     "install_sources": ["about:addons","https://addons.mozilla.org/"],
2518     "installation_mode": "blocked",
2519     "allowed_types": ["extension"]
2520   },
2521   "uBlock0@raymondhill.net": {
2522     "installation_mode": "force_installed",
2523     "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi"
2524   },
2525     "https-everywhere@eff.org": {
2526     "installation_mode": "allowed"
2527   }
2528 }'/>
2529 ```
2530 #### macOS
2531 ```
2532 <dict>
2533   <key>ExtensionSettings</key>
2534   <dict>
2535     <key>*</key>
2536     <dict>
2537       <key>blocked_install_message</key>
2538       <string>Custom error message.</string>
2539       <key>install_sources</key>
2540       <array>
2541         <string>about:addons</string>
2542         <string>https://addons.mozilla.org/</string>
2543       </array>
2544       <key>installation_mode</key>
2545       <string>blocked</string>
2546       <key>allowed_types</key>
2547       <array>
2548         <string>extension</string>
2549       </array>
2550     </dict>
2551     <key>uBlock0@raymondhill.net</key>
2552     <dict>
2553       <key>installation_mode</key>
2554        <string>force_installed</string>
2555       <key>install_url</key>
2556       <string>https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi</string>
2557     </dict>
2558     <key>https-everywhere@eff.org</key>
2559     <dict>
2560       <key>installation_mode</key>
2561        <string>allowed</string>
2562     </dict>
2563   </dict>
2564 </dict>
2565 ```
2566 #### policies.json
2567 ```
2568 {
2569   "policies": {
2570     "ExtensionSettings": {
2571       "*": {
2572         "blocked_install_message": "Custom error message.",
2573         "install_sources": ["about:addons","https://addons.mozilla.org/"],
2574         "installation_mode": "blocked",
2575         "allowed_types": ["extension"]
2576       },
2577       "uBlock0@raymondhill.net": {
2578         "installation_mode": "force_installed",
2579         "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi"
2580       },
2581       "https-everywhere@eff.org": {
2582         "installation_mode": "allowed"
2583       }
2584     }
2585   }
2586 }
2587 ```
2588 ### ExtensionUpdate
2589 Control extension updates.
2590
2591 **Compatibility:** Firefox 67, Firefox ESR 60.7\
2592 **CCK2 Equivalent:** N/A\
2593 **Preferences Affected:** `extensions.update.enabled`
2594
2595 #### Windows (GPO)
2596 ```
2597 Software\Policies\Mozilla\Firefox\ExtensionUpdate = 0x1 | 0x0
2598 ```
2599 #### Windows (Intune)
2600 OMA-URI:
2601 ```
2602 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/ExtensionUpdate
2603 ```
2604 Value (string):
2605 ```
2606 <enabled/> or <disabled/>
2607 ```
2608 #### macOS
2609 ```
2610 <dict>
2611   <key>ExtensionUpdate</key>
2612   <true/> | <false/>
2613 </dict>
2614 ```
2615 #### policies.json
2616 ```
2617 {
2618   "policies": {
2619     "ExtensionUpdate": true | false
2620   }
2621 }
2622 ```
2623 ### FlashPlugin
2624 Configure the default Flash plugin policy as well as origins for which Flash is allowed.
2625
2626 `Allow` is a list of origins where Flash are allowed.
2627
2628 `Block` is a list of origins where Flash is not allowed.
2629
2630 `Default` determines whether or not Flash is allowed by default.
2631
2632 `Locked` prevents the user from changing Flash preferences.
2633
2634 **Compatibility:** Firefox 60, Firefox ESR 60\
2635 **CCK2 Equivalent:** `permissions.plugin`\
2636 **Preferences Affected:** `plugin.state.flash`
2637
2638 #### Windows (GPO)
2639 ```
2640 Software\Policies\Mozilla\Firefox\FlashPlugin\Allow\1 = "https://example.org"
2641 Software\Policies\Mozilla\Firefox\FlashPlugin\Block\1 = "https://example.edu"
2642 Software\Policies\Mozilla\Firefox\FlashPlugin\Default = 0x1 | 0x0
2643 Software\Policies\Mozilla\Firefox\FlashPlugin\Locked = 0x1 | 0x0
2644 ```
2645 #### Windows (Intune)
2646 OMA-URI:
2647 ```
2648 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Flash/FlashPlugin_Allow
2649 ```
2650 Value (string):
2651 ```
2652 <enabled/>
2653 <data id="Permissions" value="1&#xF000;https://example.org&#xF000;2&#xF000;https://example.edu"/>
2654 ```
2655 OMA-URI:
2656 ```
2657 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Flash/FlashPlugin_Locked
2658 ```
2659 Value (string):
2660 ```
2661 <enabled/> or <disabled/>
2662 ```
2663 OMA-URI:
2664 ```
2665 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Flash/FlashPlugin_Default
2666 ```
2667 Value (string):
2668 ```
2669 <enabled/> or <disabled/>
2670 ```
2671 #### macOS
2672 ```
2673 <dict>
2674   <key>FlashPlugin</key>
2675   <dict>
2676     <key>Allow</key>
2677     <array>
2678       <string>http://example.org</string>
2679     </array>
2680     <key>Block</key>
2681     <array>
2682       <string>http://example.edu</string>
2683     </array>
2684     <key>Default</key>
2685     <true/> | <false/>
2686     <key>Locked</key>
2687     <true/> | <false/>
2688   </dict>
2689 </dict>
2690 ```
2691 #### policies.json
2692 ```
2693 {
2694   "policies": {
2695     "FlashPlugin": {
2696       "Allow": ["http://example.org/"],
2697       "Block": ["http://example.edu/"],
2698       "Default": true | false,
2699       "Locked": true | false
2700     }
2701   }
2702 }
2703 ```
2704
2705
2706
2707 ### Handlers
2708 Configure default application handlers. This policy is based on the internal format of `handlers.json`.
2709
2710 You can configure handlers based on a mime type (`mimeTypes`), a file's extension (`extensions`), or a protocol (`schemes`).
2711
2712 Within each handler type, you specify the given mimeType/extension/scheme as a key and use the following subkeys to describe how it is handled.
2713
2714 | Name | Description |
2715 | --- | --- |
2716 | `action`| Can be either `saveToDisk`, `useHelperApp`, `useSystemDefault`.
2717 | `ask` | If `true`, the user is asked if what they want to do with the file. If `false`, the action is taken without user intervention.
2718 | `handlers` | An array of handlers with the first one being the default. If you don't want to have a default handler, use an empty object for the first handler. Choose between path or uriTemplate.
2719 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`name` | The display name of the handler (might not be used).
2720 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`path`| The native path to the executable to be used.
2721 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`uriTemplate`| A url to a web based application handler. The URL must be https and contain a %s to be used for substitution.
2722
2723 **Compatibility:** Firefox 78, Firefox ESR 78\
2724 **CCK2 Equivalent:** N/A\
2725 **Preferences Affected:** N/A
2726
2727 #### Windows (GPO)
2728 Software\Policies\Mozilla\Firefox\Handlers (REG_MULTI_SZ) =
2729 ```
2730 {
2731   "mimeTypes": {
2732     "application/msword": {
2733       "action": "useSystemDefault",
2734       "ask": true | false
2735     }
2736   },
2737   "schemes": {
2738     "mailto": {
2739       "action": "useHelperApp",
2740       "ask": true | false,
2741       "handlers": [{
2742         "name": "Gmail",
2743         "uriTemplate": "https://mail.google.com/mail/?extsrc=mailto&url=%s"
2744       }]
2745     }
2746   },
2747   "extensions": {
2748     "pdf": {
2749       "action": "useHelperApp",
2750       "ask": true | false,
2751       "handlers": [{
2752         "name": "Adobe Acrobat",
2753         "path": "C:\\Program Files (x86)\\Adobe\\Acrobat Reader DC\\Reader\\AcroRd32.exe"
2754       }]
2755     }
2756   }
2757 }
2758 ```
2759 #### Windows (Intune)
2760 OMA-URI:
2761 ```
2762 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/Handlers
2763 ```
2764 Value (string):
2765 ```
2766 <enabled/>
2767 <data id="Handlers" value='
2768 {
2769   "mimeTypes": {
2770     "application/msword": {
2771       "action": "useSystemDefault",
2772       "ask": true | false
2773     }
2774   },
2775   "schemes": {
2776     "mailto": {
2777       "action": "useHelperApp",
2778       "ask": true | false,
2779       "handlers": [{
2780         "name": "Gmail",
2781         "uriTemplate": "https://mail.google.com/mail/?extsrc=mailto&amp;url=%s"
2782       }]
2783     }
2784   },
2785   "extensions": {
2786     "pdf": {
2787       "action": "useHelperApp",
2788       "ask": true | false,
2789       "handlers": [{
2790         "name": "Adobe Acrobat",
2791         "path": "C:\\Program Files (x86)\\Adobe\\Acrobat Reader DC\\Reader\\AcroRd32.exe"
2792       }]
2793     }
2794   }
2795 }
2796 '/>
2797 ```
2798 #### macOS
2799 ```
2800 <dict>
2801   <key>Handlers</key>
2802   <dict>
2803     <key>mimeTypes</key>
2804     <dict>
2805       <key>application/msword</key>
2806       <dict>
2807         <key>action</key>
2808         <string>useSystemDefault</string>
2809         <key>ask</key>
2810         <true/> | <false/>
2811       </dict>
2812     </dict>
2813     <key>schemes</key>
2814     <dict>
2815       <key>mailto</key>
2816       <dict>
2817         <key>action</key>
2818         <string>useHelperApp</string>
2819         <key>ask</key>
2820         <true/> | <false/>
2821         <key>handlers</key>
2822         <array>
2823           <dict>
2824             <key>name</key>
2825             <string>Gmail</string>
2826             <key>uriTemplate</key>
2827             <string>https://mail.google.com/mail/?extsrc=mailto&url=%s</string>
2828           </dict>
2829         </array>
2830       </dict>
2831     </dict>
2832     <key>extensions</key>
2833     <dict>
2834       <key>pdf</key>
2835       <dict>
2836         <key>action</key>
2837         <string>useHelperApp</string>
2838         <key>ask</key>
2839         <true/> | <false/>
2840         <key>handlers</key>
2841         <array>
2842           <dict>
2843             <key>name</key>
2844             <string>Adobe Acrobat</string>
2845             <key>path</key>
2846             <string>/System/Applications/Preview.app</string>
2847           </dict>
2848         </array>
2849       </dict>
2850     </dict>
2851   </dict>
2852 </dict>
2853 ```
2854 #### policies.json
2855 ```
2856 {
2857   "policies": {
2858     "Handlers": {
2859       "mimeTypes": {
2860         "application/msword": {
2861           "action": "useSystemDefault",
2862           "ask": false
2863         }
2864       },
2865       "schemes": {
2866         "mailto": {
2867           "action": "useHelperApp",
2868           "ask": true | false,
2869           "handlers": [{
2870             "name": "Gmail",
2871             "uriTemplate": "https://mail.google.com/mail/?extsrc=mailto&url=%s"
2872           }]
2873         }
2874       },
2875       "extensions": {
2876         "pdf": {
2877           "action": "useHelperApp",
2878           "ask": true | false,
2879           "handlers": [{
2880             "name": "Adobe Acrobat",
2881             "path": "/usr/bin/acroread"
2882           }]
2883         }
2884       }
2885     }
2886   }
2887 }
2888 ```
2889 ### FirefoxHome
2890 Customize the Firefox Home page.
2891
2892 **Compatibility:** Firefox 68, Firefox ESR 68\
2893 **CCK2 Equivalent:** N/A\
2894 **Preferences Affected:** `browser.newtabpage.activity-stream.showSearch`, `browser.newtabpage.activity-stream.feeds.topsites`, `browser.newtabpage.activity-stream.feeds.section.highlights`, `browser.newtabpage.activity-stream.feeds.section.topstories`, `browser.newtabpage.activity-stream.feeds.snippets`
2895
2896 #### Windows (GPO)
2897 ```
2898 Software\Policies\Mozilla\Firefox\FirefoxHome\Search = 0x1 | 0x0
2899 Software\Policies\Mozilla\Firefox\FirefoxHome\TopSites = 0x1 | 0x0
2900 Software\Policies\Mozilla\Firefox\FirefoxHome\Highlights = 0x1 | 0x0
2901 Software\Policies\Mozilla\Firefox\FirefoxHome\Pocket = 0x1 | 0x0
2902 Software\Policies\Mozilla\Firefox\FirefoxHome\Snippets = 0x1 | 0x0
2903 Software\Policies\Mozilla\Firefox\FirefoxHome\Locked = 0x1 | 0x0
2904 ```
2905 #### Windows (Intune)
2906 OMA-URI:
2907 ```
2908 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/CustomizeFirefoxHome
2909 ```
2910 Value (string):
2911 ```
2912 <enabled/>
2913 <data id="FirefoxHome_Search"  value="true | false"/>
2914 <data id="FirefoxHome_TopSites"  value="true | false"/>
2915 <data id="FirefoxHome_Highlights"  value="true | false"/>
2916 <data id="FirefoxHome_Pocket"  value="true | false"/>
2917 <data id="FirefoxHome_Snippets"  value="true | false"/>
2918 <data id="FirefoxHome_Locked"  value="true | false"/>
2919 ```
2920 #### macOS
2921 ```
2922 <dict>
2923   <key>FirefoxHome</key>
2924   <dict>
2925     <key>Search</key>
2926     <true/> | <false/>
2927     <key>TopSites</key>
2928     <true/> | <false/>
2929     <key>Highlights</key>
2930     <true/> | <false/>
2931     <key>Pocket</key>
2932     <true/> | <false/>
2933     <key>Snippets</key>
2934     <true/> | <false/>
2935     <key>Locked</key>
2936     <true/> | <false/>
2937   </dict>
2938 </dict>
2939 ```
2940 #### policies.json
2941 ```
2942 {
2943   "policies": {
2944     "FirefoxHome": {
2945       "Search": true | false,
2946       "TopSites": true | false,
2947       "Highlights": true | false,
2948       "Pocket": true | false,
2949       "Snippets": true | false,
2950       "Locked": true | false
2951     }
2952   }
2953 }
2954 ```
2955 ### HardwareAcceleration
2956 Control hardware acceleration.
2957
2958 **Compatibility:** Firefox 60, Firefox ESR 60\
2959 **CCK2 Equivalent:** N/A\
2960 **Preferences Affected:** `layers.acceleration.disabled`
2961
2962 #### Windows (GPO)
2963 ```
2964 Software\Policies\Mozilla\Firefox\HardwareAcceleration = 0x1 | 0x0
2965 ```
2966 #### Windows (Intune)
2967 OMA-URI:
2968 ```
2969 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/HardwareAcceleration
2970 ```
2971 Value (string):
2972 ```
2973 <enabled/> or <disabled/>
2974 ```
2975 #### macOS
2976 ```
2977 <dict>
2978   <key>HardwareAcceleration</key>
2979   <true/> | <false/>
2980 </dict>
2981 ```
2982 #### policies.json
2983 ```
2984 {
2985   "policies": {
2986     "HardwareAcceleration": true | false
2987   }
2988 }
2989 ```
2990 ### Homepage
2991 Configure the default homepage and how Firefox starts.
2992
2993 `URL` is the default homepage.
2994
2995 `Locked` prevents the user from changing homepage preferences.
2996
2997 `Additional` allows for more than one homepage.
2998
2999 `StartPage` is how Firefox starts. The choices are no homepage, the default homepage or the previous session.
3000
3001 With Firefox 78, an additional option as added for `Startpage`, `homepage-locked`. If this is value is set for the Startpage, the user will always get the homepage at startup and cannot choose to restore their session.
3002
3003 **Compatibility:** Firefox 60, Firefox ESR 60 (StartPage was added in Firefox 60, Firefox ESR 60.4, homepage-locked added in Firefox 78)\
3004 **CCK2 Equivalent:** `homePage`,`lockHomePage`\
3005 **Preferences Affected:** `browser.startup.homepage`, `browser.startup.page`
3006
3007 #### Windows (GPO)
3008 ```
3009 Software\Policies\Mozilla\Firefox\Homepage\URL = "https://example.com"
3010 Software\Policies\Mozilla\Firefox\Homepage\Locked = 0x1 | 0x0
3011 Software\Policies\Mozilla\Firefox\Homepage\Additional\1 = "https://example.org"
3012 Software\Policies\Mozilla\Firefox\Homepage\Additional\2 = "https://example.edu"
3013 Software\Policies\Mozilla\Firefox\Homepage\StartPage = "none" | "homepage" | "previous-session" | "homepage-locked"
3014 ```
3015 #### Windows (Intune)
3016 OMA-URI:
3017 ```
3018 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Homepage/HomepageURL
3019 ```
3020 Value (string):
3021 ```
3022 <enabled/>
3023
3024 <data id="HomepageURL" value="https://example.com"/>
3025 <data id="HomepageLocked" value="true | false"/>
3026 ```
3027 OMA-URI:
3028 ```
3029 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Homepage/HomepageAdditional
3030 ```
3031 Value (string):
3032 ```
3033 <enabled/>
3034
3035 <data id="HomepageAdditional" value="1&#xF000;http://example.org&#xF000;2&#xF000;http://example.edu"/>
3036 ```
3037 OMA-URI:
3038 ```
3039 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Homepage/HomepageStartPage
3040 ```
3041 Value (string):
3042 ```
3043 <enabled/>
3044
3045 <data id="StartPage" value="none | homepage | previous-session"/>
3046 ```
3047 #### macOS
3048 ```
3049 <dict>
3050   <key>Homepage</key>
3051   <dict>
3052     <key>URL</key>
3053     <string>http://example.com</string>
3054     <key>Locked</key>
3055     <true/> | <false/>
3056     <key>Additional</key>
3057     <array>
3058       <string>http://example.org</string>
3059       <string>http://example.edu</string>
3060     </array>
3061     <key>StartPage</key>
3062     <string>none | homepage | previous-session | homepage-locked</string>
3063   </dict>
3064 </dict>
3065 ```
3066 #### policies.json
3067 ```
3068 {
3069   "policies": {
3070     "Homepage": {
3071       "URL": "http://example.com/",
3072       "Locked": true | false,
3073       "Additional": ["http://example.org/",
3074                      "http://example.edu/"],
3075       "StartPage": "none" | "homepage" | "previous-session" | "homepage-locked"
3076     }
3077   }
3078 }
3079 ```
3080 ### InstallAddonsPermission
3081 Configure the default extension install policy as well as origins for extension installs are allowed. This policy does not override turning off all extension installs.
3082
3083 `Allow` is a list of origins where extension installs are allowed.
3084
3085 `Default` determines whether or not extension installs are allowed by default.
3086
3087 **Compatibility:** Firefox 60, Firefox ESR 60\
3088 **CCK2 Equivalent:** `permissions.install`\
3089 **Preferences Affected:** `xpinstall.enabled`
3090
3091 #### Windows (GPO)
3092 ```
3093 Software\Policies\Mozilla\Firefox\InstallAddonsPermission\Allow\1 = "https://example.org"
3094 Software\Policies\Mozilla\Firefox\InstallAddonsPermission\Allow\2 = "https://example.edu"
3095 Software\Policies\Mozilla\Firefox\InstallAddonsPermission\Default = 0x1 | 0x0
3096 ```
3097 #### Windows (Intune)
3098 OMA-URI:
3099 ```
3100 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Addons/InstallAddonsPermission_Allow
3101 ```
3102 Value (string):
3103 ```
3104 <enabled/>
3105 <data id="Permissions" value="1&#xF000;https://example.org&#xF000;2&#xF000;https://example.edu"/>
3106 ```
3107 OMA-URI:
3108 ```
3109 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Addons/InstallAddonsPermission_Default
3110 ```
3111 Value (string):
3112 ```
3113 <enabled/>
3114 ```
3115 #### macOS
3116 ```
3117 <dict>
3118   <key>InstallAddonsPermission</key>
3119   <dict>
3120     <key>Allow</key>
3121     <array>
3122       <string>http://example.org</string>
3123       <string>http://example.edu</string>
3124     </array>
3125     <key>Default</key>
3126     <true/> | <false/>
3127   </dict>
3128 </dict>
3129 ```
3130 #### policies.json
3131 ```
3132 {
3133   "policies": {
3134     "InstallAddonsPermission": {
3135       "Allow": ["http://example.org/",
3136                 "http://example.edu/"],
3137       "Default": true | false
3138     }
3139   }
3140 }
3141 ```
3142 ### LegacyProfiles
3143 Disable the feature enforcing a separate profile for each installation.
3144
3145 If this policy set to true, Firefox will not try to create different profiles for installations of Firefox in different directories. This is the equivalent of the MOZ_LEGACY_PROFILES environment variable.
3146
3147 If this policy set to false, Firefox will create a new profile for each unique installation of Firefox.
3148
3149 This policy only work on Windows via GPO (not policies.json).
3150
3151 **Compatibility:** Firefox 70, Firefox ESR 68.2 (Windows only, GPO only)\
3152 **CCK2 Equivalent:** N/A\
3153 **Preferences Affected:** N/A
3154
3155 #### Windows (GPO)
3156 ```
3157 Software\Policies\Mozilla\Firefox\LegacyProfiles = = 0x1 | 0x0
3158 ```
3159 #### Windows (Intune)
3160 OMA-URI:
3161 ```
3162 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/LegacyProfiles
3163 ```
3164 Value (string):
3165 ```
3166 <enabled/> or <disabled/>
3167 ```
3168 ### LocalFileLinks
3169 Enable linking to local files by origin.
3170
3171 **Compatibility:** Firefox 68, Firefox ESR 68\
3172 **CCK2 Equivalent:** N/A\
3173 **Preferences Affected:** `capability.policy.localfilelinks.*`
3174
3175 #### Windows (GPO)
3176 ```
3177 Software\Policies\Mozilla\Firefox\LocalFileLinks\1 = "https://example.org"
3178 Software\Policies\Mozilla\Firefox\LocalFileLinks\2 = "https://example.edu"
3179 ```
3180 #### Windows (Intune)
3181 OMA-URI:
3182 ```
3183 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/LocalFileLinks
3184 ```
3185 Value (string):
3186 ```
3187 <enabled/>
3188 <data id="LocalFileLinks" value="1&#xF000;https://example.org&#xF000;2&#xF000;https://example.edu"/>
3189 ```
3190 #### macOS
3191 ```
3192 <dict>
3193   <key>LocalFileLinks</key>
3194   <array>
3195     <string>http://example.org</string>
3196     <string>http://example.edu</string>
3197   </array>
3198 </dict>
3199 ```
3200 #### policies.json
3201 ```
3202 {
3203   "policies": {
3204     "LocalFileLinks": ["http://example.org/",
3205                        "http://example.edu/"]
3206   }
3207 }
3208 ```
3209 ### ManagedBookmarks
3210 Configures a list of bookmarks managed by an administrator that cannot be changed by the user.
3211
3212 The bookmarks are only added as a button on the personal toolbar. They are not in the bookmarks folder.
3213
3214 The syntax of this policy is exactly the same as the [Chrome ManagedBookmarks policy](https://cloud.google.com/docs/chrome-enterprise/policies/?policy=ManagedBookmarks). The schema is:
3215 ```
3216 {
3217  "items": {
3218   "id": "BookmarkType",
3219   "properties": {
3220    "children": {
3221     "items": {
3222      "$ref": "BookmarkType"
3223     },
3224     "type": "array"
3225    },
3226    "name": {
3227     "type": "string"
3228    },
3229    "toplevel_name": {
3230     "type": "string"
3231    },
3232    "url": {
3233     "type": "string"
3234    }
3235   },
3236   "type": "object"
3237  },
3238  "type": "array"
3239 }
3240 ```
3241 **Compatibility:** Firefox 83, Firefox ESR 78.5\
3242 **CCK2 Equivalent:** N/A\
3243 **Preferences Affected:** N/A
3244
3245 #### Windows (GPO)
3246 Software\Policies\Mozilla\Firefox\ManagedBookmarks (REG_MULTI_SZ) =
3247 ```
3248 [
3249   {
3250     "toplevel_name": "My managed bookmarks folder"
3251   },
3252   {
3253     "url": "example.com",
3254     "name": "Example"
3255   },
3256   {
3257     "name": "Mozilla links",
3258     "children": [
3259       {
3260         "url": "https://mozilla.org",
3261         "name": "Mozilla.org"
3262       },
3263       {
3264         "url": "https://support.mozilla.org/",
3265         "name": "SUMO"
3266       }
3267     ]
3268   }
3269 ]
3270 ```
3271 #### Windows (Intune)
3272 OMA-URI:
3273 ```
3274 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/ManagedBookmarks
3275 ```
3276 Value (string):
3277 ```
3278 <enabled/>
3279 <data id="JSON" value='
3280 [
3281   {
3282     "toplevel_name": "My managed bookmarks folder"
3283   },
3284   {
3285     "url": "example.com",
3286     "name": "Example"
3287   },
3288   {
3289     "name": "Mozilla links",
3290     "children": [
3291       {
3292         "url": "https://mozilla.org",
3293         "name": "Mozilla.org"
3294       },
3295       {
3296         "url": "https://support.mozilla.org/",
3297         "name": "SUMO"
3298       }
3299     ]
3300   }
3301 ]'/>
3302 ```
3303 #### macOS
3304 ```
3305 <dict>
3306   <key>ManagedBookmarks</key>
3307   <array>
3308     <dict>
3309       <key>toplevel_name</key>
3310       <string>My managed bookmarks folder</string>
3311       <dict>
3312         <key>url</key>
3313         <string>example.com</string>
3314         <key>name</key>
3315         <string>Example</string>
3316       </dict>
3317       <dict>
3318       <key>name</key>
3319       <string>Mozilla links</string>
3320       <key>children</key>
3321       <array>
3322         <dict>
3323           <key>url</key>
3324           <string>https://mozilla.org</string>
3325           <key>name</key>
3326           <string>Mozilla</string>
3327         </dict>
3328         <dict>
3329           <key>url</key>
3330           <string>https://support.mozilla.org/</string>
3331           <key>name</key>
3332           <string>SUMO</string>
3333         </dict>
3334       </array>
3335     </dict>
3336   </array>
3337 </dict>
3338 ```
3339 #### policies.json
3340 ```
3341 {
3342   "policies": {
3343     "ManagedBookmarks": [
3344       {
3345         "toplevel_name": "My managed bookmarks folder"
3346       },
3347       {
3348         "url": "example.com",
3349         "name": "Example"
3350       },
3351       {
3352         "name": "Mozilla links",
3353         "children": [
3354           {
3355             "url": "https://mozilla.org",
3356             "name": "Mozilla.org"
3357           },
3358           {
3359             "url": "https://support.mozilla.org/",
3360             "name": "SUMO"
3361           }
3362         ]
3363       }
3364     ]
3365   }
3366 }
3367 ```
3368 ### ManualAppUpdateOnly
3369
3370 Switch to manual updates only.
3371
3372 If this policy is enabled:
3373  1. The user will never be prompted to install updates
3374  2. Firefox will not check for updates in the background, though it will check automatically when an update UI is displayed (such as the one in the About dialog). This check will be used to show "Update to version X" in the UI, but will not automatically download the update or prompt the user to update in any other way.
3375  3. The update UI will work as expected, unlike when using DisableAppUpdate.
3376
3377 This policy is primarily intended for advanced end users, not for enterprises.
3378
3379 **Compatibility:** Firefox 87\
3380 **CCK2 Equivalent:** N/A\
3381 **Preferences Affected:** N/A
3382
3383 #### policies.json
3384 ```
3385 {
3386   "policies": {
3387     "ManualAppUpdateOnly": true | false
3388   }
3389 }
3390 ```
3391 ### PrimaryPassword
3392 Require or prevent using a primary (formerly master) password.
3393
3394 If this value is true, a primary password is required. If this value is false, it works the same as if [`DisableMasterPasswordCreation`](#disablemasterpasswordcreation) was true and removes the primary password functionality.
3395
3396 If both DisableMasterPasswordCreation and PrimaryPassword are used, DisableMasterPasswordCreation takes precedent.
3397
3398 **Compatibility:** Firefox 79, Firefox ESR 78.1\
3399 **CCK2 Equivalent:** `noMasterPassword`\
3400 **Preferences Affected:** N/A
3401
3402 #### Windows (GPO)
3403 ```
3404 Software\Policies\Mozilla\Firefox\PrimaryPassword = 0x1 | 0x0
3405 ```
3406 #### Windows (Intune)
3407 OMA-URI:
3408 ```
3409 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/PrimaryPassword
3410 ```
3411 Value (string):
3412 ```
3413 <enabled/> or <disabled/>
3414 ```
3415 #### macOS
3416 ```
3417 <dict>
3418   <key>PrimaryPassword</key>
3419   <true/> | <false/>
3420 </dict>
3421 ```
3422 #### policies.json
3423 ```
3424 {
3425   "policies": {
3426     "PrimaryPassword": true | false
3427   }
3428 }
3429 ```
3430 ### NetworkPrediction
3431 Enable or disable network prediction (DNS prefetching).
3432
3433 **Compatibility:** Firefox 67, Firefox ESR 60.7\
3434 **CCK2 Equivalent:** N/A\
3435 **Preferences Affected:** `network.dns.disablePrefetch`, `network.dns.disablePrefetchFromHTTPS`
3436
3437 #### Windows (GPO)
3438 ```
3439 Software\Policies\Mozilla\Firefox\NetworkPrediction = 0x1 | 0x0
3440 ```
3441 #### Windows (Intune)
3442 OMA-URI:
3443 ```
3444 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/NetworkPrediction
3445 ```
3446 Value (string):
3447 ```
3448 <enabled/> or <disabled/>
3449 ```
3450 #### macOS
3451 ```
3452 <dict>
3453   <key>NetworkPrediction</key>
3454   <true/> | <false/>
3455 </dict>
3456 ```
3457 #### policies.json
3458 ```
3459 {
3460   "policies": {
3461     "NetworkPrediction": true | false
3462 }
3463 ```
3464 ### NewTabPage
3465 Enable or disable the New Tab page.
3466
3467 **Compatibility:** Firefox 68, Firefox ESR 68\
3468 **CCK2 Equivalent:** N/A\
3469 **Preferences Affected:** `browser.newtabpage.enabled`
3470
3471 #### Windows (GPO)
3472 ```
3473 Software\Policies\Mozilla\Firefox\NewTabPage = 0x1 | 0x0
3474 ```
3475 #### Windows (Intune)
3476 OMA-URI:
3477 ```
3478 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/NewTabPage
3479 ```
3480 Value (string):
3481 ```
3482 <enabled/> or <disabled/>
3483 ```
3484 #### macOS
3485 ```
3486 <dict>
3487   <key>NewTabPage</key>
3488   <true/> | <false/>
3489 </dict>
3490 ```
3491 #### policies.json
3492 ```
3493 {
3494   "policies": {
3495     "NewTabPage": true | false
3496 }
3497 ```
3498 ### NoDefaultBookmarks
3499 Disable the creation of default bookmarks.
3500
3501 This policy is only effective if the user profile has not been created yet.
3502
3503 **Compatibility:** Firefox 60, Firefox ESR 60\
3504 **CCK2 Equivalent:** `removeDefaultBookmarks`\
3505 **Preferences Affected:** N/A
3506
3507 #### Windows (GPO)
3508 ```
3509 Software\Policies\Mozilla\Firefox\NoDefaultBookmarks = 0x1 | 0x0
3510 ```
3511 #### Windows (Intune)
3512 OMA-URI:
3513 ```
3514 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/NoDefaultBookmarks
3515 ```
3516 Value (string):
3517 ```
3518 <enabled/> or <disabled/>
3519 ```
3520 #### macOS
3521 ```
3522 <dict>
3523   <key>NoDefaultBookmarks</key>
3524   <true/> | <false/>
3525 </dict>
3526 ```
3527 #### policies.json
3528 ```
3529 {
3530   "policies": {
3531     "NoDefaultBookmarks": true | false
3532   }
3533 }
3534 ```
3535 ### OfferToSaveLogins
3536 Control whether or not Firefox offers to save passwords.
3537
3538 **Compatibility:** Firefox 60, Firefox ESR 60\
3539 **CCK2 Equivalent:** `dontRememberPasswords`\
3540 **Preferences Affected:** `signon.rememberSignons`
3541
3542 #### Windows (GPO)
3543 ```
3544 Software\Policies\Mozilla\Firefox\OfferToSaveLogins = 0x1 | 0x0
3545 ```
3546 #### Windows (Intune)
3547 OMA-URI:
3548 ```
3549 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/OfferToSaveLogins
3550 ```
3551 Value (string):
3552 ```
3553 <enabled/> or <disabled/>
3554 ```
3555 #### macOS
3556 ```
3557 <dict>
3558   <key>OfferToSaveLogins</key>
3559   <true/> | <false/>
3560 </dict>
3561 ```
3562 #### policies.json
3563 ```
3564 {
3565   "policies": {
3566     "OfferToSaveLogins": true | false
3567   }
3568 }
3569 ```
3570 ### OfferToSaveLoginsDefault
3571 Sets the default value of signon.rememberSignons without locking it.
3572
3573 **Compatibility:** Firefox 70, Firefox ESR 60.2\
3574 **CCK2 Equivalent:** `dontRememberPasswords`\
3575 **Preferences Affected:** `signon.rememberSignons`
3576
3577 #### Windows (GPO)
3578 ```
3579 Software\Policies\Mozilla\Firefox\OfferToSaveLoginsDefault = 0x1 | 0x0
3580 ```
3581 #### Windows (Intune)
3582 OMA-URI:
3583 ```
3584 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/OfferToSaveLoginsDefault
3585 ```
3586 Value (string):
3587 ```
3588 <enabled/> or <disabled/>
3589 ```
3590 #### macOS
3591 ```
3592 <dict>
3593   <key>OfferToSaveLoginsDefault</key>
3594   <true/> | <false/>
3595 </dict>
3596 ```
3597 #### policies.json
3598 ```
3599 {
3600   "policies": {
3601     "OfferToSaveLoginsDefault": true | false
3602   }
3603 }
3604 ```
3605 ### OverrideFirstRunPage
3606 Override the first run page. If the value is an empty string (""), the first run page is not displayed.
3607
3608 Starting with Firefox 83, Firefox ESR 78.5, you can also specify multiple URLS separated by a vertical bar (|).
3609
3610 **Compatibility:** Firefox 60, Firefox ESR 60\
3611 **CCK2 Equivalent:** `welcomePage`,`noWelcomePage`\
3612 **Preferences Affected:** `startup.homepage_welcome_url`
3613
3614 #### Windows (GPO)
3615 ```
3616 Software\Policies\Mozilla\Firefox\OverrideFirstRunPage = "http://example.org"
3617 ```
3618 #### Windows (Intune)
3619 OMA-URI:
3620 ```
3621 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/OverrideFirstRunPage
3622 ```
3623 Value (string):
3624 ```
3625 <enabled/>
3626 <data id="OverridePage" value="https://example.com"/>
3627 ```
3628 #### macOS
3629 ```
3630 <dict>
3631   <key>OverrideFirstRunPage</key>
3632   <string>http://example.org</string>
3633 </dict>
3634 ```
3635 #### policies.json
3636 ```
3637 {
3638   "policies": {
3639     "OverrideFirstRunPage": "http://example.org"
3640   }
3641 }
3642 ```
3643 ### OverridePostUpdatePage
3644 Override the upgrade page. If the value is an empty string (""), no extra pages are displayed when Firefox is upgraded.
3645
3646 **Compatibility:** Firefox 60, Firefox ESR 60\
3647 **CCK2 Equivalent:** `upgradePage`,`noUpgradePage`\
3648 **Preferences Affected:** `startup.homepage_override_url`
3649
3650 #### Windows (GPO)
3651 ```
3652 Software\Policies\Mozilla\Firefox\OverridePostUpdatePage = "http://example.org"
3653 ```
3654 #### Windows (Intune)
3655 OMA-URI:
3656 ```
3657 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/OverridePostUpdatePage
3658 ```
3659 Value (string):
3660 ```
3661 <enabled/>
3662 <data id="OverridePage" value="https://example.com"/>
3663 ```
3664 #### macOS
3665 ```
3666 <dict>
3667   <key>OverridePostUpdatePage</key>
3668   <string>http://example.org</string>
3669 </dict>
3670 ```
3671 #### policies.json
3672 ```
3673 {
3674   "policies": {
3675     "OverridePostUpdatePage": "http://example.org"
3676   }
3677 }
3678 ```
3679 ### PasswordManagerEnabled
3680 Remove access to the password manager via preferences and blocks about:logins on Firefox 70.
3681
3682 **Compatibility:** Firefox 70, Firefox ESR 60.2\
3683 **CCK2 Equivalent:** N/A\
3684 **Preferences Affected:** `pref.privacy.disable_button.view_passwords`
3685
3686 #### Windows (GPO)
3687 ```
3688 Software\Policies\Mozilla\Firefox\PasswordManagerEnabled = 0x1 | 0x0
3689 ```
3690 #### Windows (Intune)
3691 OMA-URI:
3692 ```
3693 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/PasswordManagerEnabled
3694 ```
3695 Value (string):
3696 ```
3697 <enabled/> or <disabled/>
3698 ```
3699 #### macOS
3700 ```
3701 <dict>
3702   <key>PasswordManagerEnabled</key>
3703   <true/> | <false/>
3704 </dict>
3705 ```
3706 #### policies.json
3707 ```
3708 {
3709   "policies": {
3710     "PasswordManagerEnabled": true | false
3711   }
3712 }
3713 ```
3714 ### PDFjs
3715 Disable or configure PDF.js, the built-in PDF viewer.
3716
3717 If `Enabled` is set to false, the built-in PDF viewer is disabled.
3718
3719 If `EnablePermissions` is set to true, the built-in PDF viewer will honor document permissions like preventing the copying of text.
3720
3721 Note: DisableBuiltinPDFViewer has not been deprecated. You can either continue to use it, or switch to using PDFjs->Enabled to disable the built-in PDF viewer. This new permission was added because we needed a place for PDFjs->EnabledPermissions.
3722
3723 **Compatibility:** Firefox 77, Firefox ESR 68.9\
3724 **CCK2 Equivalent:** N/A\
3725 **Preferences Affected:** `pdfjs.diabled`, `pdfjs.enablePermissions`
3726
3727 #### Windows (GPO)
3728 ```
3729 Software\Policies\Mozilla\Firefox\PDFjs\Enabled = 0x1 | 0x0
3730 Software\Policies\Mozilla\Firefox\PDFjs\EnablePermissions = 0x1 | 0x0
3731 ```
3732 #### Windows (Intune)
3733 OMA-URI:
3734 ```
3735 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~PDFjs/PDFjs_Enabled
3736 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~PDFjs/PDFjs_EnablePermissions
3737 ```
3738 Value (string):
3739 ```
3740 <enabled/>or <disabled/>
3741 ```
3742 #### macOS
3743 ```
3744 <dict>
3745   <key>PDFjs</key>
3746   <dict>
3747     <key>Enabled</key>
3748     <true/> | <false/>
3749     <key>EnablePermissions</key>
3750     <true/> | <false/>
3751   </dict>
3752 </dict>
3753 ```
3754 #### policies.json
3755 ```
3756 {
3757   "policies": {
3758     "PDFjs": {
3759       "Enabled": true | false,
3760       "EnablePermissions": true | false
3761     }
3762   }
3763 }
3764 ```
3765 ### Permissions
3766 Set permissions associated with camera, microphone, location, notifications, autoplay, and virtual reality. Because these are origins, not domains, entries with unique ports must be specified separately. This explicitly means that it is not possible to add wildcards. See examples below.
3767
3768 `Allow` is a list of origins where the feature is allowed.
3769
3770 `Block` is a list of origins where the feature is not allowed.
3771
3772 `BlockNewRequests` determines whether or not new requests can be made for the feature.
3773
3774 `Locked` prevents the user from changing preferences for the feature.
3775
3776 `Default` specifies the default value for Autoplay. block-audio-video is not supported on Firefox ESR 68.
3777
3778 **Compatibility:** Firefox 62, Firefox ESR 60.2 (Autoplay added in Firefox 74, Firefox ESR 68.6, Autoplay Default/Locked added in Firefox 76, Firefox ESR 68.8, VirtualReality added in Firefox 80, Firefox ESR 78.2)\
3779 **CCK2 Equivalent:** N/A\
3780 **Preferences Affected:** `permissions.default.camera`, `permissions.default.microphone`, `permissions.default.geo`, `permissions.default.desktop-notification`, `media.autoplay.default`, `permissions.default.xr`
3781
3782 #### Windows (GPO)
3783 ```
3784 Software\Policies\Mozilla\Firefox\Permissions\Camera\Allow\1 = "https://example.org"
3785 Software\Policies\Mozilla\Firefox\Permissions\Camera\Allow\2 = "https://example.org:1234"
3786 Software\Policies\Mozilla\Firefox\Permissions\Camera\Block\1 = "https://example.edu"
3787 Software\Policies\Mozilla\Firefox\Permissions\Camera\BlockNewRequests = 0x1 | 0x0
3788 Software\Policies\Mozilla\Firefox\Permissions\Camera\Locked = 0x1 | 0x0
3789 Software\Policies\Mozilla\Firefox\Permissions\Microphone\Allow\1 = "https://example.org"
3790 Software\Policies\Mozilla\Firefox\Permissions\Microphone\Block\1 = "https://example.edu"
3791 Software\Policies\Mozilla\Firefox\Permissions\Microphone\BlockNewRequests = 0x1 | 0x0
3792 Software\Policies\Mozilla\Firefox\Permissions\Microphone\Locked = 0x1 | 0x0
3793 Software\Policies\Mozilla\Firefox\Permissions\Location\Allow\1 = "https://example.org"
3794 Software\Policies\Mozilla\Firefox\Permissions\Location\Block\1 = "https://example.edu"
3795 Software\Policies\Mozilla\Firefox\Permissions\Location\BlockNewRequests = 0x1 | 0x0
3796 Software\Policies\Mozilla\Firefox\Permissions\Location\Locked = 0x1 | 0x0
3797 Software\Policies\Mozilla\Firefox\Permissions\Notifications\Allow\1 = "https://example.org"
3798 Software\Policies\Mozilla\Firefox\Permissions\Notifications\Block\1 = "https://example.edu"
3799 Software\Policies\Mozilla\Firefox\Permissions\Notifications\BlockNewRequests = 0x1 | 0x0
3800 Software\Policies\Mozilla\Firefox\Permissions\Notifications\Locked = 0x1 | 0x0
3801 Software\Policies\Mozilla\Firefox\Permissions\Autoplay\Allow\1 = "https://example.org"
3802 Software\Policies\Mozilla\Firefox\Permissions\Autoplay\Block\1 = "https://example.edu"
3803 Software\Policies\Mozilla\Firefox\Permissions\Autoplay\Default = "allow-audio-video" | "block-audio" | "block-audio-video"
3804 Software\Policies\Mozilla\Firefox\Permissions\Autoplay\Locked = 0x1 | 0x0
3805 Software\Policies\Mozilla\Firefox\Permissions\VirtualReality\Allow\1 = "https://example.org"
3806 Software\Policies\Mozilla\Firefox\Permissions\VirtualReality\Block\1 = "https://example.edu"
3807 Software\Policies\Mozilla\Firefox\Permissions\VirtualReality\BlockNewRequests = 0x1 | 0x0
3808 Software\Policies\Mozilla\Firefox\Permissions\VirtualReality\Locked = 0x1 | 0x0
3809 ```
3810 #### Windows (Intune)
3811 OMA-URI:
3812 ```
3813 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Location/Location_BlockNewRequests
3814 ```
3815 Value (string):
3816 ```
3817 <enabled/> or <disabled/>
3818 ```
3819 OMA-URI:
3820 ```
3821 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Location/Location_Locked
3822 ```
3823 Value (string):
3824 ```
3825 <enabled/> or <disabled/>
3826 ```
3827 OMA-URI:
3828 ```
3829 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Notifications/Notifications_Allow
3830 ```
3831 Value (string):
3832 ```
3833 <enabled/>
3834 <data id="Permissions" value="1&#xF000;https://example.org"/>
3835 ```
3836 OMA-URI:
3837 ```
3838 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Notifications/Notifications_BlockNewRequests
3839 ```
3840 Value (string):
3841 ```
3842 <enabled/> or <disabled/>
3843 ```
3844 OMA-URI:
3845 ```
3846 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Notifications/Notifications_Locked
3847 ```
3848 Value (string):
3849 ```
3850 <enabled/> or <disabled/>
3851 ```
3852 OMA-URI:
3853 ```
3854 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Autoplay/Autoplay_Allow
3855 ```
3856 Value (string):
3857 ```
3858 <enabled/>
3859 <data id="Permissions" value="1&#xF000;https://example.org"/>
3860 ```
3861 OMA-URI:
3862 ```
3863 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Autoplay/Autoplay_Block
3864 ```
3865 Value (string):
3866 ```
3867 <enabled/>
3868 <data id="Permissions" value="1&#xF000;https://example.edu"/>
3869 ```
3870 OMA-URI:
3871 ```
3872 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Autoplay/Autoplay_Default
3873 ```
3874 Value (string):
3875 ```
3876 <enabled/>
3877 <data id="Autoplay_Default" value="allow-audio-video | block-audio | block-audio-video"/>
3878 ```
3879 OMA-URI:
3880 ```
3881 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Autoplay/Autoplay_Locked
3882 ```
3883 Value (string):
3884 ```
3885 <enabled/> or <disabled/>
3886 ```
3887 OMA-URI:
3888 ```
3889 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Notifications/VirtualReality_Allow
3890 ```
3891 Value (string):
3892 ```
3893 <enabled/>
3894 <data id="Permissions" value="1&#xF000;https://example.org"/>
3895 ```
3896 OMA-URI:
3897 ```
3898 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Notifications/VirtualReality_Block
3899 ```
3900 Value (string):
3901 ```
3902 <enabled/>
3903 <data id="Permissions" value="1&#xF000;https://example.edu"/>
3904 ```
3905 OMA-URI:
3906 ```
3907 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Notifications/VirtualReality_BlockNewRequests
3908 ```
3909 Value (string):
3910 ```
3911 <enabled/> or <disabled/>
3912 ```
3913 OMA-URI:
3914 ```
3915 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Notifications/VirtualReality_Locked
3916 ```
3917 Value (string):
3918 ```
3919 <enabled/> or <disabled/>
3920 ```
3921 #### macOS
3922 ```
3923 <dict>
3924   <key>Permissions</key>
3925   <dict>
3926     <key>Camera</key>
3927     <dict>
3928       <key>Allow</key>
3929       <array>
3930         <string>https://example.org</string>
3931         <string>https://example.org:1234</string>
3932       </array>
3933       <key>Block</key>
3934       <array>
3935         <string>https://example.edu</string>
3936       </array>
3937       <key>BlockNewRequests</key>
3938       <true/> | <false/>
3939       <key>Locked</key>
3940       <true/> | <false/>
3941     </dict>
3942     <key>Microphone</key>
3943     <dict>
3944       <key>Allow</key>
3945       <array>
3946         <string>https://example.org</string>
3947       </array>
3948       <key>Block</key>
3949       <array>
3950         <string>https://example.edu</string>
3951       </array>
3952       <key>BlockNewRequests</key>
3953       <true/> | <false/>
3954       <key>Locked</key>
3955       <true/> | <false/>
3956     </dict>
3957     <key>Location</key>
3958     <dict>
3959       <key>Allow</key>
3960       <array>
3961         <string>https://example.org</string>
3962       </array>
3963       <key>Block</key>
3964       <array>
3965         <string>https://example.edu</string>
3966       </array>
3967       <key>BlockNewRequests</key>
3968       <true/> | <false/>
3969       <key>Locked</key>
3970       <true/> | <false/>
3971     </dict>
3972     <key>Notifications</key>
3973     <dict>
3974       <key>Allow</key>
3975       <array>
3976         <string>https://example.org</string>
3977       </array>
3978       <key>Block</key>
3979       <array>
3980         <string>https://example.edu</string>
3981       </array>
3982       <key>BlockNewRequests</key>
3983       <true/>
3984       <key>Locked</key>
3985       <true/>
3986     </dict>
3987     <key>Autoplay</key>
3988     <dict>
3989       <key>Allow</key>
3990       <array>
3991         <string>https://example.org</string>
3992       </array>
3993       <key>Block</key>
3994       <array>
3995         <string>https://example.edu</string>
3996       </array>
3997       <key>Default</key>
3998       <string>allow-audio-video | block-audio | block-audio-video</string>
3999       <key>Locked</key>
4000       <true/> | <false/>
4001     </dict>
4002   </dict>
4003 </dict>
4004 ```
4005 #### policies.json
4006 ```
4007 {
4008   "policies": {
4009     "Permissions": {
4010       "Camera": {
4011         "Allow": ["https://example.org","https://example.org:1234"],
4012         "Block": ["https://example.edu"],
4013         "BlockNewRequests": true | false,
4014         "Locked": true | false
4015       },
4016       "Microphone": {
4017         "Allow": ["https://example.org"],
4018         "Block": ["https://example.edu"],
4019         "BlockNewRequests": true | false,
4020         "Locked": true | false
4021       },
4022       "Location": {
4023         "Allow": ["https://example.org"],
4024         "Block": ["https://example.edu"],
4025         "BlockNewRequests": true | false,
4026         "Locked": true | false
4027       },
4028       "Notifications": {
4029         "Allow": ["https://example.org"],
4030         "Block": ["https://example.edu"],
4031         "BlockNewRequests": true | false,
4032         "Locked": true | false
4033       },
4034       "Autoplay": {
4035         "Allow": ["https://example.org"],
4036         "Block": ["https://example.edu"],
4037         "Default": "allow-audio-video" | "block-audio" | "block-audio-video",
4038         "Locked": true | false
4039       }
4040     }
4041   }
4042 }
4043 ```
4044 ### PictureInPicture
4045
4046 Enable or disable Picture-in-Picture as well as prevent the user from enabling or disabling it (Locked).
4047
4048 **Compatibility:** Firefox 78, Firefox ESR 78\
4049 **CCK2 Equivalent:** N/A\
4050 **Preferences Affected:** `media.videocontrols.picture-in-picture.video-toggle.enabled`
4051
4052 #### Windows (GPO)
4053 ```
4054 Software\Policies\Mozilla\Firefox\PictureInPicture\Enabled = 0x1 | 0x0
4055 Software\Policies\Mozilla\Firefox\PictureInPicture\Locked = 0x1 | 0x0
4056
4057 ```
4058 #### Windows (Intune)
4059 OMA-URI:
4060 ```
4061 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~PictureInPicture/PictureInPicture_Enabled
4062 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~PictureInPicture/PictureInPicture_Locked
4063 ```
4064 Value (string):
4065 ```
4066 <enabled/> or <disabled/>
4067 ```
4068 #### macOS
4069 ```
4070 <dict>
4071   <key>PictureInPicture</key>
4072   <dict>
4073     <key>Enabled</key>
4074     <true/> | <false/>
4075     <key>Locked</key>
4076     <true/> | <false/>
4077   </dict>
4078 </dict>
4079 ```
4080 #### policies.json
4081 ```
4082 {
4083   "policies": {
4084     "PictureInPicture": {
4085       "Enabled": true | false,
4086       "Locked": true | false
4087     }
4088   }
4089 }
4090 ```
4091 ### PopupBlocking
4092 Configure the default pop-up window policy as well as origins for which pop-up windows are allowed.
4093
4094 `Allow` is a list of origins where popup-windows are allowed.
4095
4096 `Default` determines whether or not pop-up windows are allowed by default.
4097
4098 `Locked` prevents the user from changing pop-up preferences.
4099
4100 **Compatibility:** Firefox 60, Firefox ESR 60\
4101 **CCK2 Equivalent:** `permissions.popup`\
4102 **Preferences Affected:** `dom.disable_open_during_load`
4103
4104 #### Windows (GPO)
4105 ```
4106 Software\Policies\Mozilla\Firefox\PopupBlocking\Allow\1 = "https://example.org"
4107 Software\Policies\Mozilla\Firefox\PopupBlocking\Allow\2 = "https://example.edu"
4108 Software\Policies\Mozilla\Firefox\PopupBlocking\Default = 0x1 | 0x0
4109 Software\Policies\Mozilla\Firefox\PopupBlocking\Locked = 0x1 | 0x0
4110 ```
4111 #### Windows (Intune)
4112 OMA-URI:
4113 ```
4114 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Popups/PopupBlocking_Allow
4115 ```
4116 Value (string):
4117 ```
4118 <enabled/>
4119 <data id="Permissions" value="1&#xF000;https://example.org&#xF000;2&#xF000;https://example.edu"/>
4120 ```
4121 OMA-URI:
4122 ```
4123 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Popups/PopupBlocking_Default
4124 ```
4125 Value (string):
4126 ```
4127 <enabled/> or <disabled/>
4128 ```
4129 OMA-URI:
4130 ```
4131 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Popups/PopupBlocking_Locked
4132 ```
4133 Value (string):
4134 ```
4135 <enabled/> or <disabled/>
4136 ```
4137 #### macOS
4138 ```
4139 <dict>
4140   <key>PopupBlocking</key>
4141   <dict>
4142     <key>Allow</key>
4143     <array>
4144       <string>http://example.org</string>
4145       <string>http://example.edu</string>
4146     </array>
4147     <key>Default</key>
4148     <true/> | <false/>
4149     <key>Locked</key>
4150     <true/> | <false/>
4151   </dict>
4152 </dict>
4153 ```
4154 #### policies.json
4155 ```
4156 {
4157   "policies": {
4158     "PopupBlocking": {
4159       "Allow": ["http://example.org/",
4160                 "http://example.edu/"],
4161       "Default": true | false,
4162       "Locked": true | false
4163     }
4164   }
4165 }
4166 ```
4167 ### Preferences
4168 Set and lock preferences.
4169
4170 **NOTE** On Windows, in order to use this policy, you must clear all settings in the old **Preferences (Deprecated)** section.
4171
4172 Previously you could only set and lock a subset of preferences. Starting with Firefox 81 and Firefox ESR 78.3 you can set many more preferences. You can also set default preferences, user preferences and you can clear preferences.
4173
4174 Preferences that start with the following prefixes are supported:
4175 ```
4176 accessibility.
4177 app.update.* (Firefox 86, Firefox 78.8)
4178 browser.
4179 datareporting.policy.
4180 dom.
4181 extensions.
4182 general.autoScroll (Firefox 83, Firefox ESR 78.5)
4183 general.smoothScroll (Firefox 83, Firefox ESR 78.5)
4184 geo.
4185 gfx.
4186 intl.
4187 layers.
4188 layout.
4189 media.
4190 network.
4191 pdfjs. (Firefox 84, Firefox ESR 78.6)
4192 places.
4193 print.
4194 signon. (Firefox 83, Firefox ESR 78.5)
4195 spellchecker. (Firefox 84, Firefox ESR 78.6)
4196 ui.
4197 widget.
4198 ```
4199 as well as the following security preferences:
4200 | Preference | Type | Default
4201 | --- | --- | ---
4202 | security.default_personal_cert | string | Ask Every Time
4203 | &nbsp;&nbsp;&nbsp;&nbsp;If set to Select Automatically, Firefox automatically chooses the default personal certificate.
4204 | security.insecure_connection_text.enabled | bool | false
4205 | &nbsp;&nbsp;&nbsp;&nbsp;If set to true, adds the words "Not Secure" for insecure sites.
4206 | security.insecure_connection_text.pbmode.enabled | bool | false
4207 | &nbsp;&nbsp;&nbsp;&nbsp;If set to true, adds the words "Not Secure" for insecure sites in private browsing.
4208 | security.insecure_field_warning.contextual.enabled | bool | true
4209 | &nbsp;&nbsp;&nbsp;&nbsp;If set to false, remove the warning for inscure login fields.
4210 | security.mixed_content.block_active_content | boolean | true
4211 | &nbsp;&nbsp;&nbsp;&nbsp;If false, mixed active content (HTTP and HTTPS) is not blocked.
4212 | security.osclientcerts.autoload | boolean | false
4213 | &nbsp;&nbsp;&nbsp;&nbsp;If true, client certificates are loaded from the operating system certificate store.
4214 | security.ssl.errorReporting.enabled | boolean | true
4215 | &nbsp;&nbsp;&nbsp;&nbsp;If false, SSL errors cannot be sent to Mozilla.
4216 | security.tls.enable_0rtt_data | boolean | true
4217 | &nbsp;&nbsp;&nbsp;&nbsp;If false, TLS early data is turned off (Firefox 93, Firefox 91.2, Firefox 78.15).
4218 | security.tls.hello_downgrade_check | boolean | true
4219 | &nbsp;&nbsp;&nbsp;&nbsp;If false, the TLS 1.3 downgrade check is disabled.
4220 | security.tls.version.enable-deprecated | boolean | false
4221 | &nbsp;&nbsp;&nbsp;&nbsp;If true, browser will accept TLS 1.0. and TLS 1.1 (Firefox 86, Firefox 78.8).
4222 | security.warn_submit_secure_to_insecure | boolean | true
4223 | &nbsp;&nbsp;&nbsp;&nbsp;If false, no warning is shown when submitting s form from https to http.
4224 &nbsp;
4225
4226 Using the preference as the key, set the `Value` to the corresponding preference value.
4227
4228 `Status` can be "default", "locked", "user" or "clear"
4229
4230 Default preferences can be modified by the user.
4231
4232 If a value is locked, it is also set as the default.
4233
4234 User preferences persist across invocations of Firefox. It is the equivalent of a user setting the preference. They are most useful when a preference is needed very early in startup so it can't be set as default by policy.
4235
4236 User preferences persist even if the policy is removed, so if you need to remove them, you should use the clear policy.
4237
4238 See the examples below for more detail.
4239
4240 IMPORTANT: Make sure you're only setting a particular preference using this mechanism and not some other way.
4241
4242 Status
4243 **Compatibility:** Firefox 81, Firefox ESR 78.3\
4244 **CCK2 Equivalent:** `preferences`\
4245 **Preferences Affected:** Many
4246
4247 #### Windows (GPO)
4248 Software\Policies\Mozilla\Firefox\Preferences (REG_MULTI_SZ) =
4249 ```
4250 {
4251   "accessibility.force_disabled": {
4252     "Value": 1,
4253     "Status": "default"
4254   },
4255   "browser.cache.disk.parent_directory": {
4256     "Value": "SOME_NATIVE_PATH",
4257     "Status": "user"
4258   },
4259   "browser.tabs.warnOnClose": {
4260     "Value": false,
4261     "Status": "locked"
4262   }
4263 }
4264 ```
4265 #### Windows (Intune)
4266 OMA-URI:
4267 ```
4268 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/Preferences
4269 ```
4270 Value (string):
4271 ```
4272 <enabled/>
4273 <data id="JSON" value='
4274 {
4275   "accessibility.force_disabled": {
4276     "Value": 1,
4277     "Status": "default"
4278   },
4279   "browser.cache.disk.parent_directory": {
4280     "Value": "SOME_NATIVE_PATH",
4281     "Status": "user"
4282   },
4283   "browser.tabs.warnOnClose": {
4284     "Value": false,
4285     "Status": "locked"
4286   }
4287 }'/>
4288 ```
4289 #### macOS
4290 ```
4291 <dict>
4292   <key>Preferences</key>
4293   <dict>
4294     <key>accessibility.force_disabled</key>
4295     <dict>
4296       <key>Value</key>
4297       <integer>1</integer>
4298       <key>Status</key>
4299       <string>default</string>
4300     </dict>
4301     <key>browser.cache.disk.parent_directory</key>
4302     <dict>
4303       <key>Value</key>
4304       <string>SOME_NATIVE_PATH</string>
4305       <key>Status</key>
4306       <string>user</string>
4307     </dict>
4308     <key>browser.tabs.warnOnClose</key>
4309     <dict>
4310       <key>Value</key>
4311       <false/>
4312       <key>Status</key>
4313       <string>locked</string>
4314     </dict>
4315   </dict>
4316 </dict>
4317 ```
4318 #### policies.json
4319 ```
4320 {
4321   "policies": {
4322     "Preferences": {
4323       "accessibility.force_disabled": {
4324         "Value": 1,
4325         "Status": "default"
4326       },
4327       "browser.cache.disk.parent_directory": {
4328         "Value": "SOME_NATIVE_PATH",
4329         "Status": "user"
4330       },
4331       "browser.tabs.warnOnClose": {
4332         "Value": false,
4333         "Status": "locked"
4334       }
4335     }
4336   }
4337 }
4338 ```
4339 ### Preferences (Deprecated)
4340 Set and lock certain preferences.
4341
4342 **Compatibility:** See below\
4343 **CCK2 Equivalent:** `preferences`\
4344 **Preferences Affected:** See below
4345
4346 | Preference | Type | Compatibility | Default
4347 | --- | --- | --- | ---
4348 | accessibility.force_disabled | integer | Firefox 70, Firefox ESR 68.2 | 0
4349 | &nbsp;&nbsp;&nbsp;&nbsp;If set to 1, platform accessibility is disabled.
4350 | app.update.auto (Deprecated - Switch to AppAutoUpdate policy) | boolean | Firefox 68, Firefox ESR 68 | true
4351 | &nbsp;&nbsp;&nbsp;&nbsp;If false, Firefox doesn't automatically install update.
4352 | browser.bookmarks.autoExportHTML | boolean | Firefox 70, Firefox ESR 68.2 | false
4353 | &nbsp;&nbsp;&nbsp;&nbsp;If true, bookmarks are exported on shutdown.
4354 | browser.bookmarks.file | string | Firefox 70, Firefox ESR 68.2 | N/A
4355 | &nbsp;&nbsp;&nbsp;&nbsp;If set, the name of the file where bookmarks are exported and imported.
4356 | browser.bookmarks.restore_default_bookmarks | boolean | Firefox 70, Firefox ESR 68.2 | N/A
4357 | &nbsp;&nbsp;&nbsp;&nbsp;If true, bookmarks are restored to their defaults.
4358 | browser.cache.disk.enable | boolean | Firefox 68, Firefox ESR 68 | true
4359 | &nbsp;&nbsp;&nbsp;&nbsp;If false, don't store cache on the hard drive.
4360 | ~browser.cache.disk.parent_directory~ | string | Firefox 68, Firefox ESR 68 | Profile temporary directory
4361 | &nbsp;&nbsp;&nbsp;&nbsp;~If set, changes the location of the disk cache.~ This policy doesn't work. It's being worked on.
4362 | browser.fixup.dns_first_for_single_words | boolean | Firefox 68, Firefox ESR 68 | false
4363 | &nbsp;&nbsp;&nbsp;&nbsp;If true, single words are sent to DNS, not directly to search.
4364 | browser.newtabpage.activity-stream.default.sites | string | Firefox 72, ESR 68.4 | Locale dependent
4365 | &nbsp;&nbsp;&nbsp;&nbsp;If set, a list of URLs to use as the default top sites on the new tab page. Due to Firefox limitations, search sites can't be added. In addition, sites with the same name but different TLDs (example.org/example.com) will not display properly.
4366 | browser.places.importBookmarksHTML | boolean | Firefox 70, Firefox ESR 68.2
4367 | &nbsp;&nbsp;&nbsp;&nbsp;If true, bookmarks are always imported on startup.
4368 | browser.safebrowsing.phishing.enabled | boolean | Firefox 70, Firefox ESR 68.2 | true
4369 | &nbsp;&nbsp;&nbsp;&nbsp;If false, phishing protection is not enabled (Not recommended)
4370 | browser.safebrowsing.malware.enabled | boolean | Firefox 70, Firefox ESR 68.2 | true
4371 | &nbsp;&nbsp;&nbsp;&nbsp;If false, malware protection is not enabled (Not recommended)
4372 | browser.search.update | boolean | Firefox 68, Firefox ESR 68 | true
4373 | &nbsp;&nbsp;&nbsp;&nbsp;If false, updates for search engines are not checked.
4374 | browser.slowStartup.notificationDisabled | boolean | Firefox 70, Firefox ESR 68.2 | false
4375 | &nbsp;&nbsp;&nbsp;&nbsp;If true, a notification isn't shown if startup is slow.
4376 | browser.tabs.warnOnClose | boolean | Firefox 68, Firefox ESR 68 | true
4377 | &nbsp;&nbsp;&nbsp;&nbsp;If false, there is no warning when the browser is closed.
4378 | browser.taskbar.previews.enable | boolean | Firefox 70, Firefox ESR 68.2 (Windows only) | false
4379 | &nbsp;&nbsp;&nbsp;&nbsp;If true, tab previews are shown in the Windows taskbar.
4380 | browser.urlbar.suggest.bookmark | boolean | Firefox 68, Firefox ESR 68 | true
4381 | &nbsp;&nbsp;&nbsp;&nbsp;If false, bookmarks aren't suggested when typing in the URL bar.
4382 | browser.urlbar.suggest.history | boolean | Firefox 68, Firefox ESR 68 | true
4383 | &nbsp;&nbsp;&nbsp;&nbsp;If false, history isn't suggested when typing in the URL bar.
4384 | browser.urlbar.suggest.openpage | boolean | Firefox 68, Firefox ESR 68 | true
4385 | &nbsp;&nbsp;&nbsp;&nbsp;If false, open tabs aren't suggested when typing in the URL bar.
4386 | datareporting.policy.dataSubmissionPolicyBypassNotification | boolean | Firefox 68, Firefox ESR 68 | false
4387 | &nbsp;&nbsp;&nbsp;&nbsp;If true, don't show the privacy policy tab on first run.
4388 | dom.allow_scripts_to_close_windows | boolean | Firefox 70, Firefox ESR 68.2 | false
4389 | &nbsp;&nbsp;&nbsp;&nbsp;If false, web page can close windows.
4390 | dom.disable_window_flip | boolean | Firefox 68, Firefox ESR 68 | true
4391 | &nbsp;&nbsp;&nbsp;&nbsp;If false, web pages can focus and activate windows.
4392 | dom.disable_window_move_resize | boolean | Firefox 68, Firefox ESR 68 | false
4393 | &nbsp;&nbsp;&nbsp;&nbsp;If true, web pages can't move or resize windows.
4394 | dom.event.contextmenu.enabled | boolean | Firefox 68, Firefox ESR 68 | true
4395 | &nbsp;&nbsp;&nbsp;&nbsp;If false, web pages can't override context menus.
4396 | dom.keyboardevent.keypress.hack.dispatch_non_printable_keys.addl | string | Firefox 68, Firefox ESR 68 | N/A
4397 | &nbsp;&nbsp;&nbsp;&nbsp;See https://support.mozilla.org/en-US/kb/dom-events-changes-introduced-firefox-66
4398 | dom.keyboardevent.keypress.hack.use_legacy_keycode_and_charcode.addl | string | Firefox 68, Firefox ESR 68 | N/A
4399 | &nbsp;&nbsp;&nbsp;&nbsp;See https://support.mozilla.org/en-US/kb/dom-events-changes-introduced-firefox-66
4400 | dom.xmldocument.load.enabled | boolean | Firefox ESR 68.5 | true.
4401 | &nbsp;&nbsp;&nbsp;&nbsp;If false, XMLDocument.load is not available.
4402 | dom.xmldocument.async.enabled | boolean | Firefox ESR 68.5 | true
4403 | &nbsp;&nbsp;&nbsp;&nbsp;If false, XMLDocument.async is not available.
4404 | extensions.blocklist.enabled | boolean | Firefox 70, Firefox ESR 68.2 | true
4405 | &nbsp;&nbsp;&nbsp;&nbsp;If false, the extensions blocklist is not used (Not recommended)
4406 | extensions.getAddons.showPane | boolean | Firefox 68, Firefox ESR 68 | N/A
4407 | &nbsp;&nbsp;&nbsp;&nbsp;If false, the Recommendations tab is not displayed in the Add-ons Manager.
4408 | extensions.htmlaboutaddons.recommendations.enabled | boolean | Firefox 72, Firefox ESR 68.4 | true
4409 | &nbsp;&nbsp;&nbsp;&nbsp;If false, recommendations are not shown on the Extensions tab in the Add-ons Manager.
4410 | geo.enabled | boolean | Firefox 70, Firefox ESR 68.2 | true
4411 | &nbsp;&nbsp;&nbsp;&nbsp;If false, the geolocation API is disabled. | Language dependent
4412 | intl.accept_languages | string | Firefox 70, Firefox ESR 68.2
4413 | &nbsp;&nbsp;&nbsp;&nbsp;If set, preferred language for web pages.
4414 | media.eme.enabled (Deprecated - Switch to EncryptedMediaExtensions policy) | boolean | Firefox 70, Firefox ESR 68.2 | true
4415 | &nbsp;&nbsp;&nbsp;&nbsp;If false, Encrypted Media Extensions are not enabled.
4416 | media.gmp-gmpopenh264.enabled | boolean | Firefox 68, Firefox ESR 68 | true
4417 | &nbsp;&nbsp;&nbsp;&nbsp;If false, the OpenH264  plugin is not downloaded.
4418 | media.gmp-widevinecdm.enabled | boolean | Firefox 68, Firefox ESR 68 | true
4419 | &nbsp;&nbsp;&nbsp;&nbsp;If false, the Widevine plugin is not downloaded.
4420 | media.peerconnection.enabled | boolean | Firefox 72, Firefox ESR 68.4 | true
4421 | &nbsp;&nbsp;&nbsp;&nbsp;If false, WebRTC is disabled
4422 | media.peerconnection.ice.obfuscate_host_addresses.whitelist (Deprecated) | string | Firefox 72, Firefox ESR 68.4 | N/A
4423 | &nbsp;&nbsp;&nbsp;&nbsp;If set, a list of domains for which mDNS hostname obfuscation is
4424 disabled
4425 | media.peerconnection.ice.obfuscate_host_addresses.blocklist | string | Firefox 79, Firefox ESR 78.1 | N/A
4426 | &nbsp;&nbsp;&nbsp;&nbsp;If set, a list of domains for which mDNS hostname obfuscation is
4427 disabled
4428 | network.dns.disableIPv6 | boolean | Firefox 68, Firefox ESR 68 | false
4429 | &nbsp;&nbsp;&nbsp;&nbsp;If true, IPv6 DNS lokoups are disabled.
4430 | network.IDN_show_punycode | boolean | Firefox 68, Firefox ESR 68 | false
4431 | &nbsp;&nbsp;&nbsp;&nbsp;If true, display the punycode version of internationalized domain names.
4432 | places.history.enabled | boolean | Firefox 68, Firefox ESR 68 | true
4433 | &nbsp;&nbsp;&nbsp;&nbsp;If false, history is not enabled.
4434 | print.save_print_settings | boolean | Firefox 70, Firefox ESR 68.2 | true
4435 | &nbsp;&nbsp;&nbsp;&nbsp;If false, print settings are not saved between jobs.
4436 | security.default_personal_cert | string | Firefox 68, Firefox ESR 68 | Ask Every Time
4437 | &nbsp;&nbsp;&nbsp;&nbsp;If set to Select Automatically, Firefox automatically chooses the default personal certificate.
4438 | security.mixed_content.block_active_content | boolean | Firefox 70, Firefox ESR 68.2 | true
4439 | &nbsp;&nbsp;&nbsp;&nbsp;If false, mixed active content (HTTP and HTTPS) is not blocked.
4440 | security.osclientcerts.autoload | boolean | Firefox 72 (Windows), Firefox 75 (macOS)  | false
4441 | &nbsp;&nbsp;&nbsp;&nbsp;If true, client certificates are loaded from the operating system certificate store.
4442 | security.ssl.errorReporting.enabled | boolean | Firefox 68, Firefox ESR 68 | true
4443 | &nbsp;&nbsp;&nbsp;&nbsp;If false, SSL errors cannot be sent to Mozilla.
4444 | security.tls.hello_downgrade_check | boolean | Firefox 72, Firefox ESR 68.4 | true
4445 | &nbsp;&nbsp;&nbsp;&nbsp;If false, the TLS 1.3 downgrade check is disabled.
4446 | ui.key.menuAccessKeyFocuses | boolean | Firefox 68, Firefox ESR 68 | true
4447 | &nbsp;&nbsp;&nbsp;&nbsp;If false, the Alt key doesn't show the menubar on Windows.
4448 | widget.content.gtk-theme-override | string | Firefox 72, Firefox ESR 68.4 (Linux only) | N/A
4449 | &nbsp;&nbsp;&nbsp;&nbsp;If set, overrides the GTK theme for widgets.
4450 #### Windows (GPO)
4451 ```
4452 Software\Policies\Mozilla\Firefox\Preferences\boolean_preference_name = 0x1 | 0x0
4453 Software\Policies\Mozilla\Firefox\Preferences\string_preference_name = "string_value"
4454 ```
4455 #### Windows (Intune)
4456 OMA-URI: (periods are replaced by underscores)
4457 ```
4458 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Preferences/boolean_preference_name
4459 ```
4460 Value (string):
4461 ```
4462 <enabled/> or <disabled/>
4463 ```
4464 OMA-URI: (periods are replaced by underscores)
4465 ```
4466 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Preferences/string_preference_name
4467 ```
4468 Value (string):
4469 ```
4470 <enabled/>
4471 <data id="Preferences_String" value="string_value"/>
4472 ```
4473 #### macOS
4474 ```
4475 <dict>
4476   <key>Preferences</key>
4477   <dict>
4478     <key>boolean_preference_name</key>
4479     <true/> | <false/>
4480     <key>string_preference_name</key>
4481     <string>string_value</string>
4482   </dict>
4483 </dict>
4484 ```
4485 #### policies.json
4486 ```
4487 {
4488   "policies": {
4489     "Preferences": {
4490       "boolean_preference_name": true | false,
4491       "string_preference_name": "string_value"
4492     }
4493   }
4494 }
4495 ```
4496 ### PromptForDownloadLocation
4497 Ask where to save each file before downloading.
4498
4499 **Compatibility:** Firefox 68, Firefox ESR 68\
4500 **CCK2 Equivalent:** N/A\
4501 **Preferences Affected:** `browser.download.useDownloadDir`
4502
4503 #### Windows (GPO)
4504 ```
4505 Software\Policies\Mozilla\Firefox\PromptForDownloadLocation = 0x1 | 0x0
4506 ```
4507 #### Windows (Intune)
4508 OMA-URI:
4509 ```
4510 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/PromptForDownloadLocation
4511 ```
4512 Value (string):
4513 ```
4514 <enabled/> or <disabled/>
4515 ```
4516 #### macOS
4517 ```
4518 <dict>
4519   <key>PromptForDownloadLocation</key>
4520   <true/> | <false/>
4521 </dict>
4522 ```
4523 #### policies.json
4524 ```
4525 {
4526   "policies": {
4527     "PromptForDownloadLocation": true | false
4528   }
4529 }
4530 ```
4531 ### Proxy
4532 Configure proxy settings. These settings correspond to the connection settings in Firefox preferences.
4533 To specify ports, append them to the hostnames with a colon (:).
4534
4535 `Mode` is the proxy method being used.
4536
4537 `Locked` is whether or not proxy settings can be changed.
4538
4539 `HTTPProxy` is the HTTP proxy server.
4540
4541 `UseHTTPProxyForAllProtocols` is whether or not the HTTP proxy should be used for all other proxies.
4542
4543 `SSLProxy` is the SSL proxy server.
4544
4545 `FTPProxy` is the FTP proxy server.
4546
4547 `SOCKSProxy` is the SOCKS proxy server
4548
4549 `SOCKSVersion` is the SOCKS version (4 or 5)
4550
4551 `Passthrough` is list of hostnames or IP addresses that will not be proxied. Use `<local>` to bypass proxying for all hostnames which do not contain periods.
4552
4553 `AutoConfigURL` is a  URL for proxy configuration (only used if Mode is autoConfig).
4554
4555 `AutoLogin` means do not prompt for authentication if password is saved.
4556
4557 `UseProxyForDNS` to use proxy DNS when using SOCKS v5.
4558
4559 **Compatibility:** Firefox 60, Firefox ESR 60\
4560 **CCK2 Equivalent:** `networkProxy*`\
4561 **Preferences Affected:** `network.proxy.type`, `network.proxy.autoconfig_url`, `network.proxy.socks_remote_dns`, `signon.autologin.proxy`, `network.proxy.socks_version`, `network.proxy.no_proxies_on`, `network.proxy.share_proxy_settings`, `network.proxy.http`, `network.proxy.http_port`, `network.proxy.ftp`, `network.proxy.ftp_port`, `network.proxy.ssl`, `network.proxy.ssl_port`, `network.proxy.socks`, `network.proxy.socks_port`
4562
4563 #### Windows (GPO)
4564 ```
4565 Software\Policies\Mozilla\Firefox\Proxy\Mode = "none" | "system" | "manual" | "autoDetect" | "autoConfig"
4566 Software\Policies\Mozilla\Firefox\Proxy\Locked = 0x1 | 0x0
4567 Software\Policies\Mozilla\Firefox\=Proxy\HTTPProxy = https://httpproxy.example.com
4568 Software\Policies\Mozilla\Firefox\Proxy\UseHTTPProxyForAllProtocols = 0x1 | 0x0
4569 Software\Policies\Mozilla\Firefox\Proxy\SSLProxy = https://sslproxy.example.com
4570 Software\Policies\Mozilla\Firefox\Proxy\FTPProxy = https://ftpproxy.example.com
4571 Software\Policies\Mozilla\Firefox\Proxy\SOCKSProxy = https://socksproxy.example.com
4572 Software\Policies\Mozilla\Firefox\Proxy\SOCKSVersion = 0x4 | 0x5
4573 Software\Policies\Mozilla\Firefox\Proxy\Passthrough = <local>
4574 Software\Policies\Mozilla\Firefox\Proxy\AutoConfigURL = URL_TO_AUTOCONFIG
4575 Software\Policies\Mozilla\Firefox\Proxy\AutoLogin = 0x1 | 0x0
4576 Software\Policies\Mozilla\Firefox\Proxy\UseProxyForDNS = 0x1 | 0x0
4577 ```
4578 #### Windows (Intune)
4579 OMA-URI:
4580 ```
4581 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/Proxy
4582 ```
4583 Value (string):
4584 ```
4585 <enabled/>
4586 <data id="ProxyLocked" value="true | false"/>
4587 <data id="ConnectionType" value="none | system | manual | autoDetect | autoConfig"/>
4588 <data id="HTTPProxy" value="https://httpproxy.example.com"/>
4589 <data id="UseHTTPProxyForAllProtocols" value="true | false"/>
4590 <data id="SSLProxy" value="https://sslproxy.example.com"/>
4591 <data id="FTPProxy" value="https://ftpproxy.example.com"/>
4592 <data id="SOCKSProxy" value="https://socksproxy.example.com"/>
4593 <data id="SOCKSVersion" value="4 | 5"/>
4594 <data id="AutoConfigURL" value="URL_TO_AUTOCONFIG"/>
4595 <data id="Passthrough" value="<local>"/>
4596 <data id="AutoLogin" value="true | false"/>
4597 <data id="UseProxyForDNS" value="true | false"/>
4598 ```
4599 #### macOS
4600 ```
4601 <dict>
4602   <key>Proxy</key>
4603   <dict>
4604     <key>Mode</key>
4605     <string>none | system | manual | autoDetect | autoConfig</string>
4606     <key>Locked</key>
4607     <true> | </false>
4608     <key>HTTPProxy</key>
4609     <string>https://httpproxy.example.com</string>
4610     <key>UseHTTPProxyForAllProtocols</key>
4611     <true> | </false>
4612     <key>SSLProxy</key>
4613     <string>https://sslproxy.example.com</string>
4614     <key>FTPProxy</key>
4615     <string>https://ftpproxy.example.com</string>
4616     <key>SOCKSProxy</key>
4617     <string>https://socksproxy.example.com</string>
4618     <key>SOCKSVersion</key>
4619     <string>4 | 5</string>
4620     <key>Passthrough</key>
4621     <string>&lt;local>&gt;</string>
4622     <key>AutoConfigURL</key>
4623     <string>URL_TO_AUTOCONFIG</string>
4624     <key>AutoLogin</key>
4625     <true> | </false>
4626     <key>UseProxyForDNS</key>
4627     <true> | </false>
4628   </dict>
4629 </dict>
4630 ```
4631 #### policies.json
4632 ```
4633 {
4634   "policies": {
4635     "Proxy": {
4636       "Mode": "none" | "system" | "manual" | "autoDetect" | "autoConfig",
4637       "Locked": true | false,
4638       "HTTPProxy": "hostname",
4639       "UseHTTPProxyForAllProtocols": true | false,
4640       "SSLProxy": "hostname",
4641       "FTPProxy": "hostname",
4642       "SOCKSProxy": "hostname",
4643       "SOCKSVersion": 4 | 5,
4644       "Passthrough": "<local>",
4645       "AutoConfigURL": "URL_TO_AUTOCONFIG",
4646       "AutoLogin": true | false,
4647       "UseProxyForDNS": true | false
4648     }
4649   }
4650 }
4651 ```
4652 ### RequestedLocales
4653 Set the the list of requested locales for the application in order of preference. It will cause the corresponding language pack to become active.
4654
4655 Note: For Firefox 68, this can now be a string so that you can specify an empty value.
4656
4657 **Compatibility:** Firefox 64, Firefox ESR 60.4, Updated in Firefox 68, Firefox ESR 68\
4658 **CCK2 Equivalent:** N/A\
4659 **Preferences Affected:** N/A
4660 #### Windows (GPO)
4661 ```
4662 Software\Policies\Mozilla\Firefox\RequestedLocales\1 = "de"
4663 Software\Policies\Mozilla\Firefox\RequestedLocales\2 = "en-US"
4664
4665 or
4666
4667 Software\Policies\Mozilla\Firefox\RequestedLocales = "de,en-US"
4668 ```
4669 #### Windows (Intune)
4670 OMA-URI:
4671 ```
4672 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/RequestedLocalesString
4673 ```
4674 Value (string):
4675 ```
4676 <enabled/>
4677 <data id="Preferences_String" value="de,en-US"/>
4678 ```
4679 #### macOS
4680 ```
4681 <dict>
4682   <key>RequestedLocales</key>
4683   <array>
4684     <string>de</string>
4685     <string>en-US</string>
4686   </array>
4687 </dict>
4688
4689 or
4690
4691 <dict>
4692   <key>RequestedLocales</key>
4693   <string>de,en-US</string>
4694 </dict>
4695
4696 ```
4697 #### policies.json
4698 ```
4699 {
4700   "policies": {
4701     "RequestedLocales": ["de", "en-US"]
4702   }
4703 }
4704
4705 or
4706
4707 {
4708   "policies": {
4709     "RequestedLocales": "de,en-US"
4710   }
4711 }
4712 ```
4713 <a name="SanitizeOnShutdown"></a>
4714
4715 ### SanitizeOnShutdown (Selective)
4716 Clear data on shutdown. Choose from Cache, Cookies, Download History, Form & Search History, Browsing History, Active Logins, Site Preferences and Offline Website Data.
4717
4718 Previously, these values were always locked. Starting with Firefox 74 and Firefox ESR 68.6, you can use the `Locked` option to either keep the values unlocked (set it to false), or lock only the values you set (set it to true). If you want the old behavior of locking everything, do not set `Locked` at all.
4719
4720 **Compatibility:** Firefox 68, Firefox ESR 68 (Locked added in 74/68.6)\
4721 **CCK2 Equivalent:** N/A\
4722 **Preferences Affected:** `privacy.sanitize.sanitizeOnShutdown`, `privacy.clearOnShutdown.cache`, `privacy.clearOnShutdown.cookies`, `privacy.clearOnShutdown.downloads`, `privacy.clearOnShutdown.formdata`, `privacy.clearOnShutdown.history`, `privacy.clearOnShutdown.sessions`, `privacy.clearOnShutdown.siteSettings`, `privacy.clearOnShutdown.offlineApps`
4723 #### Windows (GPO)
4724 ```
4725 Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Cache = 0x1 | 0x0
4726 Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Cookies = 0x1 | 0x0
4727 Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Downloads = 0x1 | 0x0
4728 Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\FormData = 0x1 | 0x0
4729 Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\History = 0x1 | 0x0
4730 Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Sessions = 0x1 | 0x0
4731 Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\SiteSettings = 0x1 | 0x0
4732 Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\OfflineApps = 0x1 | 0x0
4733 Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Locked = 0x1 | 0x0
4734 ```
4735 #### Windows (Intune)
4736 OMA-URI:
4737 ```
4738 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~SanitizeOnShutdown/A_SanitizeOnShutdown_Cache
4739 ```
4740 Value (string):
4741 ```
4742 <enabled/> or <disabled/>
4743 ```
4744 OMA-URI:
4745 ```
4746 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~SanitizeOnShutdown/B_SanitizeOnShutdown_Cookies
4747 ```
4748 Value (string):
4749 ```
4750 <enabled/> or <disabled/>
4751 ```
4752 OMA-URI:
4753 ```
4754 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~SanitizeOnShutdown/C_SanitizeOnShutdown_Downloads
4755 ```
4756 Value (string):
4757 ```
4758 <enabled/> or <disabled/>
4759 ```
4760 OMA-URI:
4761 ```
4762 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~SanitizeOnShutdown/D_SanitizeOnShutdown_FormData
4763 ```
4764 Value (string):
4765 ```
4766 <enabled/> or <disabled/>
4767 ```
4768 OMA-URI:
4769 ```
4770 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~SanitizeOnShutdown/E_SanitizeOnShutdown_History
4771 ```
4772 Value (string):
4773 ```
4774 <enabled/> or <disabled/>
4775 ```
4776 OMA-URI:
4777 ```
4778 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~SanitizeOnShutdown/F_SanitizeOnShutdown_Sessions
4779 ```
4780 Value (string):
4781 ```
4782 <enabled/> or <disabled/>
4783 ```
4784 OMA-URI:
4785 ```
4786 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~SanitizeOnShutdown/G_SanitizeOnShutdown_SiteSettings
4787 ```
4788 Value (string):
4789 ```
4790 <enabled/> or <disabled/>
4791 ```
4792 OMA-URI:
4793 ```
4794 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~SanitizeOnShutdown/H_SanitizeOnShutdown_OfflineApps
4795 ```
4796 Value (string):
4797 ```
4798 <enabled/> or <disabled/>
4799 ```
4800 OMA-URI:
4801 ```
4802 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~SanitizeOnShutdown/I_SanitizeOnShutdown_Locked
4803 ```
4804 Value (string):
4805 ```
4806 <enabled/> or <disabled/>
4807 ```
4808 #### macOS
4809 ```
4810 <dict>
4811   <key>SanitizeOnShutdown</key>
4812   <dict>
4813     <key>Cache</key>
4814     <true/> | <false/>
4815     <key>Cookies</key>
4816     <true/> | <false/>
4817     <key>Downloads</key>
4818     <true/> | <false/>
4819     <key>FormData</key>
4820     <true/> | <false/>
4821     <key>History</key>
4822     <true/> | <false/>
4823     <key>Sessions</key>
4824     <true/> | <false/>
4825     <key>SiteSettings</key>
4826     <true/> | <false/>
4827     <key>OfflineApps</key>
4828     <true/> | <false/>
4829     <key>Locked</key>
4830     <true/> | <false/>
4831   </dict>
4832 </dict>
4833 ```
4834 #### policies.json
4835 ```
4836 {
4837   "policies": {
4838     "SanitizeOnShutdown": {
4839       "Cache": true | false,
4840       "Cookies": true | false,
4841       "Downloads": true | false,
4842       "FormData": true | false,
4843       "History": true | false,
4844       "Sessions": true | false,
4845       "SiteSettings": true | false,
4846       "OfflineApps": true | false,
4847       "Locked": true | false
4848     }
4849   }
4850 }
4851 ```
4852 ### SanitizeOnShutdown (All)
4853 Clear all data on shutdown, including Browsing & Download History, Cookies, Active Logins, Cache, Form & Search History, Site Preferences and Offline Website Data.
4854
4855 **Compatibility:** Firefox 60, Firefox ESR 60\
4856 **CCK2 Equivalent:** N/A\
4857 **Preferences Affected:** `privacy.sanitize.sanitizeOnShutdown`, `privacy.clearOnShutdown.cache`, `privacy.clearOnShutdown.cookies`, `privacy.clearOnShutdown.downloads`, `privacy.clearOnShutdown.formdata`, `privacy.clearOnShutdown.history`, `privacy.clearOnShutdown.sessions`, `privacy.clearOnShutdown.siteSettings`, `privacy.clearOnShutdown.offlineApps`
4858 #### Windows (GPO)
4859 ```
4860 Software\Policies\Mozilla\Firefox\SanitizeOnShutdown = 0x1 | 0x0
4861 ```
4862 #### Windows (Intune)
4863 OMA-URI:
4864 ```
4865 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/C_SanitizeOnShutdown
4866 ```
4867 Value (string):
4868 ```
4869 <enabled/> or <disabled/>
4870 ```
4871 #### macOS
4872 ```
4873 <dict>
4874   <key>SanitizeOnShutdown</key>
4875   <true/> | <false/>
4876 </dict>
4877 ```
4878 #### policies.json
4879 ```
4880 {
4881   "policies": {
4882     "SanitizeOnShutdown": true | false
4883   }
4884 }
4885 ```
4886 ### SearchBar
4887 Set whether or not search bar is displayed.
4888
4889 **Compatibility:** Firefox 60, Firefox ESR 60\
4890 **CCK2 Equivalent:** `showSearchBar`\
4891 **Preferences Affected:** N/A
4892
4893 #### Windows (GPO)
4894 ```
4895 Software\Policies\Mozilla\Firefox\SearchBar = "unified" | "separate"
4896 ```
4897
4898 #### Windows (Intune)
4899 OMA-URI:
4900 ```
4901 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/SearchBar
4902 ```
4903 Value (string):
4904 ```
4905 <enabled/>
4906 <data id="SearchBar" value="unified | separate"/>
4907 ```
4908 #### macOS
4909 ```
4910 <dict>
4911   <key>SearchBar</key>
4912   <string>unified | separate</string>
4913 </dict>
4914 ```
4915 #### policies.json
4916 ```
4917 {
4918   "policies": {
4919     "SearchBar": "unified" | "separate"
4920   }
4921 }
4922 ```
4923 <a name="SearchEngines"></a>
4924
4925 ### SearchEngines (This policy is only available on the ESR.)
4926
4927 ### SearchEngines | Default
4928
4929 Set the default search engine. This policy is only available on the ESR.
4930
4931 **Compatibility:** Firefox ESR 60\
4932 **CCK2 Equivalent:** `defaultSearchEngine`\
4933 **Preferences Affected:** N/A
4934
4935 #### Windows (GPO)
4936 ```
4937 Software\Policies\Mozilla\Firefox\SearchEngines\Default = NAME_OF_SEARCH_ENGINE
4938 ```
4939 #### Windows (Intune)
4940 OMA-URI:
4941 ```
4942 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Search/SearchEngines_Default
4943 ```
4944 Value (string):
4945 ```
4946 <enabled/>
4947 <data id="SearchEngines_Default" value="NAME_OF_SEARCH_ENGINE"/>
4948 ```
4949 #### macOS
4950 ```
4951 <dict>
4952   <key>SearchEngines</key>
4953   <dict>
4954     <key>Default</key>
4955     <string>NAME_OF_SEARCH_ENGINE</string>
4956   </dict>
4957 </dict>
4958 ```
4959 #### policies.json
4960 ```
4961 {
4962   "policies": {
4963     "SearchEngines": {
4964       "Default": "NAME_OF_SEARCH_ENGINE"
4965     }
4966   }
4967 }
4968 ```
4969 ### SearchEngines | PreventInstalls
4970
4971 Prevent installing search engines from webpages.
4972
4973 **Compatibility:** Firefox ESR 60\
4974 **CCK2 Equivalent:** `disableSearchEngineInstall`\
4975 **Preferences Affected:** N/A
4976
4977 #### Windows (GPO)
4978 ```
4979 Software\Policies\Mozilla\Firefox\SearchEngines\PreventInstalls = 0x1 | 0x0
4980 ```
4981 #### Windows (Intune)
4982 OMA-URI:
4983 ```
4984 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Search/SearchEngines_PreventInstalls
4985 ```
4986 Value (string):
4987 ```
4988 <enabled/> or <disabled/>
4989 ```
4990 #### macOS
4991 ```
4992 <dict>
4993   <key>SearchEngines</key>
4994   <dict>
4995     <key>PreventInstalls</key>
4996     <true/> | <false/>
4997   </dict>
4998 </dict>
4999 ```
5000 #### policies.json
5001 ```
5002 {
5003   "policies": {
5004     "SearchEngines": {
5005       "PreventInstalls": true | false
5006     }
5007   }
5008 }
5009 ```
5010 ### SearchEngines | Remove
5011
5012 Hide built-in search engines. This policy is only available on the ESR.
5013
5014 **Compatibility:** Firefox ESR 60.2\
5015 **CCK2 Equivalent:** `removeDefaultSearchEngines` (removed all built-in engines)\
5016 **Preferences Affected:** N/A
5017
5018 #### Windows (GPO)
5019 ```
5020 Software\Policies\Mozilla\Firefox\SearchEngines\Remove\1 = NAME_OF_SEARCH_ENGINE
5021 ```
5022 #### Windows (Intune)
5023 OMA-URI:
5024 ```
5025 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Search/SearchEngines_Remove
5026 ```
5027 Value (string):
5028 ```
5029 <enabled/>
5030 <data id="SearchEngines_Remove" value="1&#xF000;NAME_OF_SEARCH_ENGINE"/>
5031 ```
5032 #### macOS
5033 ```
5034 <dict>
5035   <key>SearchEngines</key>
5036   <dict>
5037     <key>Remove</key>
5038     <array>
5039       <string>NAME_OF_SEARCH_ENGINE</string>
5040     </array>
5041   </dict>
5042 </dict>
5043 ```
5044 #### policies.json
5045 ```
5046 {
5047   "policies": {
5048     "SearchEngines": {
5049       "Remove": ["NAME_OF_SEARCH_ENGINE"]
5050     }
5051   }
5052 }
5053 ```
5054 ### SearchEngines | Add
5055
5056 Add new search engines (up to five). This policy is only available on the ESR. `Name` and `URLTemplate` are required.
5057
5058 `Name` is the name of the search engine.
5059
5060 `URLTemplate` is the search URL with {searchTerms} to substitute for the search term.
5061
5062 `Method` is either GET or POST
5063
5064 `IconURL` is a URL for the icon to use.
5065
5066 `Alias` is a keyword to use for the engine.
5067
5068 `Description` is a description of the search engine.
5069
5070 `PostData` is the POST data as name value pairs separated by &.
5071
5072 `SuggestURLTemplate` is a search suggestions URL with {searchTerms} to substitute for the search term.
5073
5074 `Encoding` is the query charset for the engine. It defaults to UTF-8.
5075
5076 **Compatibility:** Firefox ESR 60 (POST support in Firefox ESR 68, Encoding support in Firefox 91)\
5077 **CCK2 Equivalent:** `searchplugins`\
5078 **Preferences Affected:** N/A
5079
5080 #### Windows (GPO)
5081 ```
5082 Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\Name = "Example1"
5083 Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\URLTemplate = "https://www.example.org/q={searchTerms}"
5084 Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\Method = "GET" | "POST"
5085 Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\IconURL = "https://www.example.org/favicon.ico"
5086 Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\Alias = "example"
5087 Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\Description = "Example Description"
5088 Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\SuggestURLTemplate = "https://www.example.org/suggestions/q={searchTerms}"
5089 Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\PostData = "name=value&q={searchTerms}"
5090 ```
5091 #### Windows (Intune)
5092 OMA-URI:
5093 ```
5094 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Search/SearchEngines_1
5095 ```
5096 Value (string):
5097 ```
5098 <enabled/>
5099 <data id="SearchEngine_Name" value="Example1"/>
5100 <data id="SearchEngine_URLTemplate" value="https://www.example.org/q={searchTerms"/>
5101 <data id="SearchEngine_Method" value="GET | POST"/>
5102 <data id="SearchEngine_IconURL" value="https://www.example.org/favicon.ico"/>
5103 <data id="SearchEngine_Alias" value="example"/>
5104 <data id="SearchEngine_Description" value="Example Description"/>
5105 <data id="SearchEngine_SuggestURLTemplate" value="https://www.example.org/suggestions/q={searchTerms}"/>
5106 <data id="SearchEngine_PostData" value="name=value&amp;q={searchTerms}"/>
5107 ```
5108 #### macOS
5109 ```
5110 <dict>
5111   <key>SearchEngines</key>
5112   <dict>
5113     <key>Add</key>
5114     <array>
5115       <dict>
5116         <key>Name</key>
5117         <string>Example1</string>
5118         <key>URLTemplate</key>
5119         <string>https://www.example.org/q={searchTerms}</string>
5120         <key>Method</key>
5121         <string>GET | POST </string>
5122         <key>IconURL</key>
5123         <string>https://www.example.org/favicon.ico</string>
5124         <key>Alias</key>
5125         <string>example</string>
5126         <key>Description</key>
5127         <string>Example Description</string>
5128         <key>SuggestURLTemplate</key>
5129         <string>https://www.example.org/suggestions/q={searchTerms}</string>
5130         <key>PostData</key>
5131         <string>name=value&q={searchTerms}</string>
5132       </dict>
5133     <array>
5134   </dict>
5135 </dict>
5136 ```
5137 #### policies.json
5138 ```
5139 {
5140   "policies": {
5141     "SearchEngines": {
5142       "Add": [
5143         {
5144           "Name": "Example1",
5145           "URLTemplate": "https://www.example.org/q={searchTerms}",
5146           "Method": "GET" | "POST",
5147           "IconURL": "https://www.example.org/favicon.ico",
5148           "Alias": "example",
5149           "Description": "Description",
5150           "PostData": "name=value&q={searchTerms}",
5151           "SuggestURLTemplate": "https://www.example.org/suggestions/q={searchTerms}"
5152         }
5153       ]
5154     }
5155   }
5156 }
5157 ```
5158 ### SearchSuggestEnabled
5159
5160 Enable search suggestions.
5161
5162 **Compatibility:** Firefox 68, Firefox ESR 68\
5163 **CCK2 Equivalent:** N/A\
5164 **Preferences Affected:** `browser.urlbar.suggest.searches`, `browser.search.suggest.enabled`
5165
5166 #### Windows (GPO)
5167 ```
5168 Software\Policies\Mozilla\Firefox\SearchSuggestEnabled = 0x1 | 0x0
5169 ```
5170 #### Windows (Intune)
5171 OMA-URI:
5172 ```
5173 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Search/SearchSuggestEnabled
5174 ```
5175 Value (string):
5176 ```
5177 <enabled/> or <disabled/>
5178 ```
5179 #### macOS
5180 ```
5181 <dict>
5182   <key>SearchSuggestEnabled</key>
5183   <true/> | <false/>
5184 </dict>
5185 ```
5186 #### policies.json
5187 ```
5188 {
5189   "policies": {
5190     "SearchSuggestEnabled": true | false
5191   }
5192 }
5193 ```
5194 ### SecurityDevices
5195
5196 Install PKCS #11 modules.
5197
5198 **Compatibility:** Firefox 64, Firefox ESR 60.4\
5199 **CCK2 Equivalent:** `certs.devices`\
5200 **Preferences Affected:** N/A
5201
5202 #### Windows (GPO)
5203 ```
5204 Software\Policies\Mozilla\Firefox\SecurityDevices\NAME_OF_DEVICE = PATH_TO_LIBRARY_FOR_DEVICE
5205 ```
5206 #### Windows (Intune)
5207 OMA-URI:
5208 ```
5209 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/SecurityDevices
5210 ```
5211 Value (string):
5212 ```
5213 <enabled/>
5214 <data id="SecurityDevices" value="NAME_OF_DEVICE&#xF000;PATH_TO_LIBRARY_FOR_DEVICE"/>
5215 ```
5216 #### macOS
5217 ```
5218 <dict>
5219   <key>SecurityDevices</key>
5220   <dict>
5221     <key>NAME_OF_DEVICE</key>
5222     <string>PATH_TO_LIBRARY_FOR_DEVICE</string>
5223   </dict>
5224 </dict>
5225 ```
5226
5227 #### policies.json
5228 ```
5229 {
5230   "policies": {
5231     "SecurityDevices": {
5232       "NAME_OF_DEVICE": "PATH_TO_LIBRARY_FOR_DEVICE"
5233     }
5234   }
5235 }
5236 ```
5237 ### ShowHomeButton
5238 Show the home button on the toolbar.
5239
5240 Future versions of Firefox will not show the home button by default.
5241
5242 **Compatibility:** Firefox 88, Firefox ESR 78.10\
5243 **CCK2 Equivalent:** N/A\
5244 **Preferences Affected:** N/A
5245
5246 #### Windows (GPO)
5247 ```
5248 Software\Policies\Mozilla\Firefox\ShowHomeButton = 0x1 | 0x0
5249 ```
5250 #### Windows (Intune)
5251 OMA-URI:
5252 ```
5253 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/ShowHomeButton
5254 ```
5255 Value (string):
5256 ```
5257 <enabled/> or <disabled/>
5258 ```
5259 #### macOS
5260 ```
5261 <dict>
5262   <key>ShowHomeButton</key>
5263   <true/> | <false/>
5264 </dict>
5265 ```
5266 #### policies.json
5267 ```
5268 {
5269   "policies": {
5270     "ShowHomeButton": true | false
5271   }
5272 }
5273 ```
5274 ### SSLVersionMax
5275
5276 Set and lock the maximum version of TLS.
5277
5278 **Compatibility:** Firefox 66, Firefox ESR 60.6\
5279 **CCK2 Equivalent:** N/A\
5280 **Preferences Affected:** `security.tls.version.max`
5281
5282 #### Windows (GPO)
5283 ```
5284 Software\Policies\Mozilla\Firefox\SSLVersionMax = "tls1" | "tls1.1" | "tls1.2" | "tls1.3"
5285 ```
5286 #### Windows (Intune)
5287 OMA-URI:
5288 ```
5289 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/SSLVersionMax
5290 ```
5291 Value (string):
5292 ```
5293 <enabled/>
5294 <data id="SSLVersion" value="tls1 | tls1.2 | tls1.3"/>
5295 ```
5296 #### macOS
5297 ```
5298 <dict>
5299   <key>SSLVersionMax</key>
5300   <string>tls1 | tls1.1 | tls1.2 | tls1.3</string>
5301 </dict>
5302 ```
5303
5304 #### policies.json
5305 ```
5306 {
5307   "policies": {
5308     "SSLVersionMax": "tls1" | "tls1.1" | "tls1.2" | "tls1.3"
5309   }
5310 }
5311 ```
5312 ### SSLVersionMin
5313
5314 Set and lock the minimum version of TLS.
5315
5316 **Compatibility:** Firefox 66, Firefox ESR 60.6\
5317 **CCK2 Equivalent:** N/A\
5318 **Preferences Affected:** `security.tls.version.min`
5319
5320 #### Windows (GPO)
5321 ```
5322 Software\Policies\Mozilla\Firefox\SSLVersionMin = "tls1" | "tls1.1" | "tls1.2" | "tls1.3"
5323 ```
5324 #### Windows (Intune)
5325 OMA-URI:
5326 ```
5327 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/SSLVersionMin
5328 ```
5329 Value (string):
5330 ```
5331 <enabled/>
5332 <data id="SSLVersion" value="tls1 | tls1.2 | tls1.3"/>
5333 ```
5334 #### macOS
5335 ```
5336 <dict>
5337   <key>SSLVersionMin</key>
5338   <string>tls1 | tls1.1 | tls1.2 | tls1.3</string>
5339 </dict>
5340 ```
5341
5342 #### policies.json
5343 ```
5344 {
5345   "policies": {
5346     "SSLVersionMin": "tls1" | "tls1.1" | "tls1.2" | "tls1.3"
5347   }
5348 }
5349 ```
5350 ### SupportMenu
5351 Add a menuitem to the help menu for specifying support information.
5352
5353 **Compatibility:** Firefox 68.0.1, Firefox ESR 68.0.1\
5354 **CCK2 Equivalent:** helpMenu\
5355 **Preferences Affected:** N/A
5356
5357 #### Windows (GPO)
5358 ```
5359 Software\Policies\Mozilla\Firefox\SupportMenu\Title = "Support Menu"
5360 Software\Policies\Mozilla\Firefox\SupportMenu\URL = "http://example.com/support"
5361 Software\Policies\Mozilla\Firefox\SupportMenu\AccessKey = "S"
5362 ```
5363 #### Windows (Intune)
5364 OMA-URI:
5365 ```
5366 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/SupportMenu
5367 ```
5368 Value (string):
5369 ```
5370 <enabled/>
5371 <data id="SupportMenuTitle" value="Support Menu"/>
5372 <data id="SupportMenuURL" value="http://example.com/support"/>
5373 <data id="SupportMenuAccessKey" value="S">
5374 ```
5375 #### macOS
5376 ```
5377 <dict>
5378   <key>SupportMenu</key>
5379   <dict>
5380     <key>Title</key>
5381     <string>SupportMenu</string>
5382     <key>URL</key>
5383     <string>http://example.com/support</string>
5384     <key>AccessKey</key>
5385     <string>S</string>
5386   </dict>
5387 </dict>
5388 ```
5389 #### policies.json
5390 ```
5391 {
5392   "policies": {
5393     "SupportMenu": {
5394       "Title": "Support Menu",
5395       "URL": "http://example.com/support",
5396       "AccessKey": "S"
5397     }
5398   }
5399 }
5400 ```
5401 ### UserMessaging
5402
5403 Prevent Firefox from messaging the user in certain situations.
5404
5405 `WhatsNew` Remove the "What's New" icon and menuitem.
5406
5407 `ExtensionRecommendations` If false, don't recommend extensions while the user is visiting web pages.
5408
5409 `FeatureRecommendations` IF false, don't recommend browser features.
5410
5411 `UrlbarInterventions` If false, Don't offer Firefox specific suggestions in the URL bar.
5412
5413 `SkipOnboarding` If true, don't show onboarding messages on the new tab page.
5414
5415 **Compatibility:** Firefox 75, Firefox ESR 68.7\
5416 **CCK2 Equivalent:** N/A\
5417 **Preferences Affected:** `browser.messaging-system.whatsNewPanel.enabled`, `browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons`, `browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features`, `browser.aboutwelcome.enabled`
5418
5419 #### Windows (GPO)
5420 ```
5421 Software\Policies\Mozilla\Firefox\UserMessaging\WhatsNew = 0x1 | 0x0
5422 Software\Policies\Mozilla\Firefox\UserMessaging\ExtensionRecommendations = 0x1 | 0x0
5423 Software\Policies\Mozilla\Firefox\UserMessaging\FeatureRecommendations = 0x1 | 0x0
5424 Software\Policies\Mozilla\Firefox\UserMessaging\UrlbarInterventions = 0x1 | 0x0
5425 Software\Policies\Mozilla\Firefox\UserMessaging\SkipOnboarding = 0x1 | 0x0
5426 ```
5427 #### Windows (Intune)
5428 OMA-URI:
5429 ```
5430 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~UserMessaging/UserMessaging_WhatsNew
5431 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~UserMessaging/UserMessaging_ExtensionRecommendations
5432 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~UserMessaging/UserMessaging_FeatureRecommendations
5433 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~UserMessaging/UserMessaging_UrlbarInterventions
5434 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~UserMessaging/UserMessaging_SkipOnboarding
5435 ```
5436 Value (string):
5437 ```
5438 <enabled/> or <disabled/>
5439 ```
5440 #### macOS
5441 ```
5442 <dict>
5443   <key>UserMessaging</key>
5444   <dict>
5445     <key>WhatsNew</key>
5446     <true/> | <false/>
5447     <key>ExtensionRecommendations</key>
5448     <true/> | <false/>
5449     <key>FeatureRecommendations</key>
5450     <true/> | <false/>
5451     <key>UrlbarInterventions</key>
5452     <true/> | <false/>
5453     <key>SkipOnboarding</key>
5454     <true/> | <false/>
5455   </dict>
5456 </dict>
5457 ```
5458 #### policies.json
5459 ```
5460 {
5461   "policies": {
5462     "UserMessaging": {
5463       "WhatsNew": true | false,
5464       "ExtensionRecommendations": true | false,
5465       "FeatureRecommendations": true | false,
5466       "UrlbarInterventions": true | false
5467       "SkipOnboarding": true | false
5468     }
5469   }
5470 }
5471 ```
5472 ### WebsiteFilter
5473 Block websites from being visited. The parameters take an array of Match Patterns, as documented in https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Match_patterns.
5474 The arrays are limited to 1000 entries each.
5475
5476 If you want to block all URLs, you can use `<all_urls>` or `*://*/*`. You can't have just a `*` on the right side.
5477
5478 For specific protocols, use `https://*/*` or `http://*/*`.
5479
5480 As of Firefox 83 and Firefox ESR 78.5, file URLs are supported.
5481
5482 **Compatibility:** Firefox 60, Firefox ESR 60\
5483 **CCK2 Equivalent:** N/A\
5484 **Preferences Affected:** N/A
5485
5486 #### Windows (GPO)
5487 ```
5488 Software\Policies\Mozilla\Firefox\WebsiteFilter\Block\1 = "<all_urls>"
5489 Software\Policies\Mozilla\Firefox\WebsiteFilter\Exceptions\1 = "http://example.org/*"
5490 ```
5491 #### Windows (Intune)
5492 OMA-URI:
5493 ```
5494 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/B_WebsiteFilter_Block
5495 ```
5496 Value (string):
5497 ```
5498 <enabled/> <data id="WebsiteFilter" value="1&#xF000;&#60;all_urls&#62;"/>
5499 ```
5500 OMA-URI:
5501 ```
5502 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/B_WebsiteFilter_Exceptions
5503 ```
5504 Value (string):
5505 ```
5506 <enabled/>
5507 <data id="WebsiteFilter" value="1&#xF000;http://example.org/*"/>
5508 ```
5509 #### macOS
5510 ```
5511 <dict>
5512   <key>WebsiteFilter</key>
5513   <dict>
5514     <key>Block</key>
5515     <array>
5516       <string><all_urls></string>
5517     </array>
5518     <key>Exceptions</key>
5519     <array>
5520       <string>http://example.org/*</string>
5521     </array>
5522   </dict>
5523
5524 </dict>
5525 ```
5526 #### policies.json
5527 ```
5528 {
5529   "policies": {
5530     "WebsiteFilter": {
5531       "Block": ["<all_urls>"],
5532       "Exceptions": ["http://example.org/*"]
5533     }
5534   }
5535 }
5536 ```
5537 ### WindowsSSO
5538 Allow Windows single sign-on for Microsoft, work, and school accounts.
5539
5540 If this policy is set to true, Firefox will use credentials stored in Windows to sign in to Microsoft, work, and school accounts.
5541
5542 **Compatibility:** Firefox 91\
5543 **CCK2 Equivalent:** N/A\
5544 **Preferences Affected:** `network.http.windows-sso.enabled`
5545
5546 #### Windows (GPO)
5547 ```
5548 Software\Policies\Mozilla\Firefox\WindowsSSO = 0x1 | 0x0
5549 ```
5550 #### Windows (Intune)
5551 OMA-URI:
5552 ```
5553 ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/WindowsSSO
5554 ```
5555 Value (string):
5556 ```
5557 <enabled/> or <disabled/>
5558 ```
5559 #### policies.json
5560 ```
5561 {
5562   "policies": {
5563     "WindowsSSO": true | false
5564   }
5565 }
5566 ```