| **[`DisableMasterPasswordCreation`](#disablemasterpasswordcreation)** | Remove the master password functionality.
| **[`DisableAppUpdate`](#disableappupdate)** | Turn off application updates.
| **[`DisableBuiltinPDFViewer`](#disablebuiltinpdfviewer)** | Disable the built in PDF viewer.
+| **[`DisableDefaultBrowserAgent`](#disabledefaultbrowseragent)** | Prevent the default browser agent from taking any actions (Windows only).
| **[`DisableDeveloperTools`](#disabledevelopertools)** | Remove access to all developer tools.
| **[`DisableFeedbackCommands`](#disablefeedbackcommands)** | Disable the menus for reporting sites.
| **[`DisableFirefoxScreenshots`](#disablefirefoxscreenshots)** | Remove access to Firefox Screenshots.
| **[`DisableFormHistory`](#disableformhistory)** | Turn off saving information on web forms and the search bar.
| **[`DisablePocket`](#disablepocket)** | Remove Pocket in the Firefox UI.
| **[`DisablePrivateBrowsing`](#disableprivatebrowsing)** | Remove access to private browsing.
+| **[`DisablePasswordReveal`](#disablepasswordreveal)** | Do not allow passwords to be revealed in saved logins.
| **[`DisableProfileImport`](#disableprofileimport)** | Disables the "Import data from another browser" option in the bookmarks window.
| **[`DisableProfileRefresh`](#disableprofilerefresh)** | Disable the Refresh Firefox button on about:support and support.mozilla.org
| **[`DisableSafeMode`](#disablesafemode)** | Disable safe mode within the browser.
| **[`SSLVersionMax`](#sslversionmax)** | Set and lock the maximum version of TLS.
| **[`SSLVersionMin`](#sslversionmin)** | Set and lock the minimum version of TLS.
| **[`SupportMenu`](#supportmenu)** | Add a menuitem to the help menu for specifying support information.
+| **[`UserMessaging`](#usermessaging)** | Don't show certain messages to the user.
| **[`WebsiteFilter`](#websitefilter)** | Block websites from being visited.
### AppAutoUpdate
}
}
```
+### DisableDefaultBrowserAgent
+Prevent the default browser agent from taking any actions. Only applicable to Windows; other platforms don’t have the agent.
+
+**Compatibility:** Firefox 75, Firefox ESR 68.7 (Windows only)\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** N/A
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\DisableDefaultBrowserAgent = 0x1 | 0x0
+```
+
+#### policies.json
+```
+{
+ "policies": {
+ "DisableDefaultBrowserAgent": true | false
+ }
+}
+```
### DisableDeveloperTools
Remove access to all developer tools.
`Locked` prevents the user from changing DNS over HTTPS preferences.
-**Compatibility:** Firefox 63, Firefox ESR 68\
+`ExcludedDomains` excludes domains from DNS over HTTPS.
+
+**Compatibility:** Firefox 63, Firefox ESR 68 (ExcludedDomains added in 75/68.7)\
**CCK2 Equivalent:** N/A\
**Preferences Affected:** `network.trr.mode`,`network.trr.uri`
Software\Policies\Mozilla\Firefox\DNSOverHTTPS\Enabled = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DNSOverHTTPS\ProviderURL = "URL_TO_ALTERNATE_PROVIDER"
Software\Policies\Mozilla\Firefox\DNSOverHTTPS\Locked = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\DNSOverHTTPS\ExcludedDomains\1 = "example.com"
```
#### macOS
```
<string>URL_TO_ALTERNATE_PROVIDER</string>
<key>Locked</key>
<true/> | <false/>
+ <key>ExcludedDomains</key>
+ <array>
+ <string>example.com</string>
+ </array>
</dict>
</dict>
```
"DNSOverHTTPS": {
"Enabled": true | false,
"ProviderURL": "URL_TO_ALTERNATE_PROVIDER",
- "Locked": true | false
+ "Locked": true | false,
+ "ExcludedDomains": ["example.com"]
}
}
}
}
}
```
+### UserMessaging
+
+Prevent installing search engines from webpages.
+
+`WhatsNew` Remove the "What's New" icon and menuitem. (Firefox 75 only)
+
+`ExtensionRecommendations` Don't recommend extensions.
+
+`FeatureRecommendations` Don't recommend browser features.
+
+`UrlbarInterventions` Don't offer Firefox specific suggestions in the URL bar. (Firefox 75 only)
+
+**Compatibility:** Firefox 75, Firefox ESR 68.7\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** `browser.messaging-system.whatsNewPanel.enabled`,`browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons`,`browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features`
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\UserMessaging\WhatsNew = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\UserMessaging\ExtensionRecommendations = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\UserMessaging\FeatureRecommendations = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\UserMessaging\UrlbarInterventions = 0x1 | 0x0
+```
+#### macOS
+```
+<dict>
+ <key>UserMessaging</key>
+ <dict>
+ <key>WhatsNew</key>
+ <true/> | <false/>
+ <key>ExtensionRecommendations</key>
+ <true/> | <false/>
+ <key>FeatureRecommendations</key>
+ <true/> | <false/>
+ <key>UrlbarInterventions</key>
+ <true/> | <false/>
+ </dict>
+</dict>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "UserMessaging": {
+ "WhatsNew": true | false,
+ "ExtensionRecommendations": true | false,
+ "FeatureRecommendations": true | false,
+ "UrlbarInterventions": true | false
+ }
+ }
+}
+```
### WebsiteFilter
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. Only http/https addresses are supported at the moment. The arrays are limited to 1000 entries each.
#### Windows (GPO)
```
-Software\Policies\Mozilla\Firefox\WebsiteFilters\Block\1 = "<all_urls>"
-Software\Policies\Mozilla\Firefox\WebsiteFilters\Exceptions\1 = "http://example.org/*"
+Software\Policies\Mozilla\Firefox\WebsiteFilter\Block\1 = "<all_urls>"
+Software\Policies\Mozilla\Firefox\WebsiteFilter\Exceptions\1 = "http://example.org/*"
```
#### macOS
```