| **[`Certificates -> ImportEnterpriseRoots`](#certificates--importenterpriseroots)** | Trust certificates that have been added to the operating system certificate store by a user or administrator.
| **[`Certificates -> Install`](#certificates--install)** | Install certificates into the Firefox certificate store.
| **[`Cookies`](#cookies)** | Configure cookie preferences.
-| **[`DisableSetDesktopBackground`](#disablesetdesktopbackground)** | Remove the "Set As Desktop Background..." menuitem when right clicking on an image.
-| **[`DisableMasterPasswordCreation`](#disablemasterpasswordcreation)** | Remove the master password functionality.
| **[`DisableAppUpdate`](#disableappupdate)** | Turn off application updates.
| **[`DisableBuiltinPDFViewer`](#disablebuiltinpdfviewer)** | Disable the built in PDF viewer.
| **[`DisabledCiphers`](#disabledciphers)** | Disable ciphers.
| **[`DisableFirefoxStudies`](#disablefirefoxstudies)** | Disable Firefox studies (Shield).
| **[`DisableForgetButton`](#disableforgetbutton)** | Disable the "Forget" button.
| **[`DisableFormHistory`](#disableformhistory)** | Turn off saving information on web forms and the search bar.
+| **[`DisableMasterPasswordCreation`](#disablemasterpasswordcreation)** | Remove the master password functionality.
| **[`DisablePasswordReveal`](#disablepasswordreveal)** | Do not allow passwords to be revealed in saved logins.
| **[`DisablePocket`](#disablepocket)** | Remove Pocket in the Firefox UI.
| **[`DisablePrivateBrowsing`](#disableprivatebrowsing)** | Remove access to private browsing.
| **[`DisableProfileRefresh`](#disableprofilerefresh)** | Disable the Refresh Firefox button on about:support and support.mozilla.org
| **[`DisableSafeMode`](#disablesafemode)** | Disable safe mode within the browser.
| **[`DisableSecurityBypass`](#disablesecuritybypass)** | Prevent the user from bypassing security in certain cases.
+| **[`DisableSetDesktopBackground`](#disablesetdesktopbackground)** | Remove the "Set As Desktop Background..." menuitem when right clicking on an image.
| **[`DisableSystemAddonUpdate`](#disablesystemaddonupdate)** | Prevent system add-ons from being installed or update.
| **[`DisableTelemetry`](#disabletelemetry)** | DisableTelemetry
| **[`DisplayBookmarksToolbar`](#displaybookmarkstoolbar)** | Set the initial state of the bookmarks toolbar.
| **[`InstallAddonsPermission`](#installaddonspermission)** | Configure the default extension install policy as well as origins for extension installs are allowed.
| **[`LegacyProfiles`](#legacyprofiles)** | Disable the feature enforcing a separate profile for each installation.
| **[`LocalFileLinks`](#localfilelinks)** | Enable linking to local files by origin.
+| **[`PrimaryPassword`](#primarypassword)** | Require or prevent using a primary (formerly master) password.
| **[`NetworkPrediction`](#networkprediction)** | Enable or disable network prediction (DNS prefetching).
| **[`NewTabPage`](#newtabpage)** | Enable or disable the New Tab page.
| **[`NoDefaultBookmarks`](#nodefaultbookmarks)** | Disable the creation of default bookmarks.
`Allow` is a list of origins (not domains) where cookies are always allowed. You must include http or https.
+`AllowSession` is a list of origins (not domains) where cookies are only allowed for the current session. You must include http or https.
+
`Block` is a list of origins (not domains) where cookies are always blocked. You must include http or https.
`Default` determines whether cookies are accepted at all.
`Locked` prevents the user from changing cookie preferences.
-**Compatibility:** Firefox 60, Firefox ESR 60 (RejectTracker was added in Firefox 63)\
+**Compatibility:** Firefox 60, Firefox ESR 60 (RejectTracker added in Firefox 63, AllowSession added in Firefox 79/78.1)\
**CCK2 Equivalent:** N/A\
**Preferences Affected:** `network.cookie.cookieBehavior`,`network.cookie.lifetimePolicy`
#### Windows (GPO)
```
Software\Policies\Mozilla\Firefox\Cookies\Allow\1 = "https://example.com"
+Software\Policies\Mozilla\Firefox\Cookies\AllowSession\1 = "https://example.edu"
Software\Policies\Mozilla\Firefox\Cookies\Block\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\Cookies\Default = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Cookies\AcceptThirdParty = "always" | "never" | "from-visited"
```
OMA-URI:
```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Cookies/Cookies_AllowSession
+```
+Value (string):
+```
+<enabled/>
+<data id="Cookies_Allow" value="1https://example.edu"/>
+```
+OMA-URI:
+```
./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Cookies/Cookies_Block
```
Value (string):
<array>
<string>http://example.com</string>
</array>
+ <key>AllowSession</key>
+ <array>
+ <string>http://example.edu</string>
+ </array>
<key>Block</key>
<array>
<string>http://example.org</string>
"policies": {
"Cookies": {
"Allow": ["http://example.org/"],
+ "AllowSession": ["http://example.edu/"],
"Block": ["http://example.edu/"],
"Default": true | false,
"AcceptThirdParty": "always" | "never" | "from-visited",
### DisableMasterPasswordCreation
Remove the master password functionality.
+If this value is true, it works the same as setting [`PrimaryPassword`](#primarypassword) to false and removes the primary password functionality.
+
+If both DisableMasterPasswordCreation and PrimaryPassword are used, DisableMasterPasswordCreation takes precedent.
+
**Compatibility:** Firefox 60, Firefox ESR 60\
**CCK2 Equivalent:** `noMasterPassword`\
**Preferences Affected:** N/A
#### policies.json
```
{
- "mimeTypes": {
- "application/msword": {
- "action": "useSystemDefault",
- "ask": false
- }
- },
- "schemes": {
- "mailto": {
- "action": "useHelperApp",
- "ask": true | false,
- "handlers": [{
- "name": "Gmail",
- "uriTemplate": "https://mail.google.com/mail/?extsrc=mailto&url=%s"
- }]
- }
- },
- "extensions": {
- "pdf": {
- "action": "useHelperApp",
- "ask": true | false,
- "handlers": [{
- "name": "Adobe Acrobat",
- "path": "/usr/bin/acroread"
- }]
+ "policies": {
+ "Handlers": {
+ "mimeTypes": {
+ "application/msword": {
+ "action": "useSystemDefault",
+ "ask": false
+ }
+ },
+ "schemes": {
+ "mailto": {
+ "action": "useHelperApp",
+ "ask": true | false,
+ "handlers": [{
+ "name": "Gmail",
+ "uriTemplate": "https://mail.google.com/mail/?extsrc=mailto&url=%s"
+ }]
+ }
+ },
+ "extensions": {
+ "pdf": {
+ "action": "useHelperApp",
+ "ask": true | false,
+ "handlers": [{
+ "name": "Adobe Acrobat",
+ "path": "/usr/bin/acroread"
+ }]
+ }
+ }
}
}
}
}
}
```
+### PrimaryPassword
+Require or prevent using a primary (formerly master) password.
+
+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.
+
+If both DisableMasterPasswordCreation and PrimaryPassword are used, DisableMasterPasswordCreation takes precedent.
+
+**Compatibility:** Firefox 79, Firefox ESR 78.1\
+**CCK2 Equivalent:** `noMasterPassword`\
+**Preferences Affected:** N/A
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\PrimaryPassword = 0x1 | 0x0
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/PrimaryPassword
+```
+Value (string):
+```
+<enabled/> or <disabled/>
+```
+#### macOS
+```
+<dict>
+ <key>PrimaryPassword</key>
+ <true/> | <false/>
+</dict>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "PrimaryPassword": true | false
+ }
+}
+```
### NetworkPrediction
Enable or disable network prediction (DNS prefetching).
| If false, the Widevine plugin is not downloaded.
| media.peerconnection.enabled | boolean | Firefox 72, Firefox ESR 68.4 | true
| If false, WebRTC is disabled
-| media.peerconnection.ice.obfuscate_host_addresses.whitelist | string | Firefox 72, Firefox ESR 68.4 | N/A
+| media.peerconnection.ice.obfuscate_host_addresses.whitelist (Deprecated) | string | Firefox 72, Firefox ESR 68.4 | N/A
+| If set, a list of domains for which mDNS hostname obfuscation is
+disabled
+| media.peerconnection.ice.obfuscate_host_addresses.blocklist | string | Firefox 79, Firefox ESR 78.1 | N/A
| If set, a list of domains for which mDNS hostname obfuscation is
disabled
| network.dns.disableIPv6 | boolean | Firefox 68, Firefox ESR 68 | false
```
### UserMessaging
-Prevent installing search engines from webpages.
+Prevent Firefox from messaging the user in certain situations.
`WhatsNew` Remove the "What's New" icon and menuitem. (Firefox 75 only)
-`ExtensionRecommendations` Don't recommend extensions.
+`ExtensionRecommendations` Don't recommend extensions while the user is visiting web pages.
`FeatureRecommendations` Don't recommend browser features.