Firefox 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`.
Unfortunately, JSON files do not support comments, but you can add extra entries to the JSON to use as comments. You will see an error in about:policies, but the policies will still work properly. For example:
-
```
{
"policies": {
}
}
```
+Note: The `policies.json` must use the UTF-8 encoding.
| Policy Name | Description
| --- | --- |
| **[`DisabledCiphers`](#disabledciphers)** | Disable ciphers.
| **[`DisableDefaultBrowserAgent`](#disabledefaultbrowseragent)** | Prevent the default browser agent from taking any actions (Windows only).
| **[`DisableDeveloperTools`](#disabledevelopertools)** | Remove access to all developer tools.
+| **[`DisableEncryptedClientHello`](#disableencryptedclienthello)** | Disable the TLS Feature Encrypted Client Hello (ECH).
| **[`DisableFeedbackCommands`](#disablefeedbackcommands)** | Disable the menus for reporting sites.
| **[`DisableFirefoxAccounts`](#disablefirefoxaccounts)** | Disable Firefox Accounts integration (Sync).
| **[`DisableFirefoxScreenshots`](#disablefirefoxscreenshots)** | Remove access to Firefox Screenshots.
| **[`Handlers`](#handlers)** | Configure default application handlers.
| **[`HardwareAcceleration`](#hardwareacceleration)** | Control hardware acceleration.
| **[`Homepage`](#homepage)** | Configure the default homepage and how Firefox starts.
+| **[`HttpAllowlist`](#httpallowlist)** | Configure origins that will not be upgraded to HTTPS.
+| **[`HttpsOnlyMode`](#httpsonlymode)** | Configure HTTPS-Only Mode.
| **[`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.
| **[`LegacySameSiteCookieBehaviorEnabled`](#legacysamesitecookiebehaviorenabled)** | Enable default legacy SameSite cookie behavior setting.
| **[`Permissions`](#permissions)** | Set permissions associated with camera, microphone, location, and notifications.
| **[`PictureInPicture`](#pictureinpicture)** | Enable or disable Picture-in-Picture.
| **[`PopupBlocking`](#popupblocking)** | Configure the default pop-up window policy as well as origins for which pop-up windows are allowed.
+| **[`PostQuantumKeyAgreementEnabled`](#postquantumkeyagreementenabled)** | Enable post-quantum key agreement for TLS.
| **[`Preferences`](#preferences)** | Set and lock preferences.
| **[`PrimaryPassword`](#primarypassword)** | Require or prevent using a primary (formerly master) password.
| **[`PrintingEnabled`](#printingenabled)** | Enable or disable printing.
}
]'/>
```
+If you are using custom ADMX and ADML administrative templates in Intune, you can use this OMA-URI instead
+to workaround the limit on the length of strings. Put all of your JSON on one line.
+
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/AutoLaunchProtocolsFromOriginsOneLine
+```
+Value (string):
+```
+<enabled/>
+<data id="JSONOneLine" value='[]'/>
+```
#### macOS
```
<dict>
<enabled/>
<data id="JSON" value='[]'/>
```
+If you are using custom ADMX and ADML administrative templates in Intune, you can use this OMA-URI instead
+to workaround the limit on the length of strings. Put all of your JSON on one line.
+
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/BookmarksOneLine
+```
+Value (string):
+```
+<enabled/>
+<data id="JSONOneLine" value='[]'/>
+```
#### macOS
```
<dict>
}
'/>
```
+If you are using custom ADMX and ADML administrative templates in Intune, you can use this OMA-URI instead
+to workaround the limit on the length of strings. Put all of your JSON on one line.
+
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/ContainersOneLine
+```
+Value (string):
+```
+<enabled/>
+<data id="JSONOneLine" value='{}'/>
+```
#### macOS
```
<dict>
}
}
```
+### DisableEncryptedClientHello
+Disable the TLS Feature for Encrypted Client Hello. Note that TLS Client Hellos will still contain an ECH extension, but this extension will not be used by Firefox during the TLS handshake.
+
+**Compatibility:** Firefox 127, Firefox ESR 128\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** `network.dns.echconfig.enabled`, `network.dns.http3_echconfig.enabled`
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\DisableEncryptedClientHello = 0x1 | 0x0
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableEncryptedClientHello
+```
+Value (string):
+```
+<enabled/> or <disabled/>
+```
+#### macOS
+```
+<dict>
+ <key>DisableEncryptedClientHello</key>
+ <true/> | <false/>
+</dict>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "DisableEncryptedClientHello": true | false
+ }
+}
+```
### DisableFirefoxAccounts
Disable Firefox Accounts integration (Sync).
]
'/>
```
+If you are using custom ADMX and ADML administrative templates in Intune, you can use this OMA-URI instead
+to workaround the limit on the length of strings. Put all of your JSON on one line.
+
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/ExemptDomainFileTypePairsFromFileTypeDownloadWarningsOneLine
+```
+Value (string):
+```
+<enabled/>
+<data id="JSONOneLine" value='[]'/>
+```
#### macOS
```
<dict>
}
}'/>
```
+If you are using custom ADMX and ADML administrative templates in Intune, you can use this OMA-URI instead
+to workaround the limit on the length of strings. Put all of your JSON on one line.
+
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/ExtensionSettingsOneLine
+```
+Value (string):
+```
+<enabled/>
+<data id="JSONOneLine" value='{}'/>
+```
#### macOS
```
<dict>
}
'/>
```
+If you are using custom ADMX and ADML administrative templates in Intune, you can use this OMA-URI instead
+to workaround the limit on the length of strings. Put all of your JSON on one line.
+
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/HandlersOneLine
+```
+Value (string):
+```
+<enabled/>
+<data id="JSONOneLine" value='{}'/>
+```
#### macOS
```
<dict>
}
}
```
+### HttpAllowlist
+Configure sites that will not be upgraded to HTTPS.
+
+The sites are specified as a list of origins.
+
+**Compatibility:** Firefox 127\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** N/A
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\HttpAllowlist\1 = "http://example.org"
+Software\Policies\Mozilla\Firefox\HttpAllowlist\2 = "http://example.edu"
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/HttpAllowlist
+```
+Value (string):
+```
+<enabled/>
+<data id="List" value="1http://example.org2http://example.edu"/>
+```
+#### macOS
+```
+<dict>
+ <key>HttpAllowlist </key>
+ <array>
+ <string>http://example.org</string>
+ <string>http://example.edu</string>
+ </array>
+</dict>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "HttpAllowlist ": ["http://example.org",
+ "http://example.edu"]
+ }
+}
+```
+### HttpsOnlyMode
+Configure HTTPS-Only Mode.
+
+| Value | Description
+| --- | --- |
+| allowed | HTTPS-Only Mode is off by default, but the user can turn it on.
+| disallowed | HTTPS-Only Mode is off and the user can't turn it on.
+| enabled | HTTPS-Only Mode is on by default, but the user can turn it off.
+| force_enabled | HTTPS-Only Mode is on and the user can't turn it off.
+
+**Compatibility:** Firefox 127\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** `dom.security.https_only_mode`
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\HttpsOnlyMode = "allowed", "disallowed", "enabled", "force_enabled"
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/HttpsOnlyMode
+```
+Value (string):
+```
+<enabled/>
+<data id="HttpsOnlyMode" value="allowed | disallowed | enabled | force_enabled"/>
+```
+#### macOS
+```
+<dict>
+ <key>HttpsOnlyMode</key>
+ <string>allowed | disallowed | enabled | force_enabled</string>
+</dict>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "HttpsOnlyMode": "allowed" | "disallowed" | "enabled" | "force_enabled"
+ }
+}
+```
### InstallAddonsPermission
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.
}
]'/>
```
+If you are using custom ADMX and ADML administrative templates in Intune, you can use this OMA-URI instead
+to workaround the limit on the length of strings. Put all of your JSON on one line.
+
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/ManagedBoomarksOneLine
+```
+Value (string):
+```
+<enabled/>
+<data id="JSONOneLine" value='[]'/>
+```
#### macOS
```
<dict>
}
}
```
-
### PDFjs
Disable or configure PDF.js, the built-in PDF viewer.
}
}
```
+### PostQuantumKeyAgreementEnabled
+Enable post-quantum key agreement for TLS.
+
+**Compatibility:** Firefox 127\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** `security.tls.enable_kyber`, `network.http.http3.enable_kyber` (Firefox 128)
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\PostQuantumKeyAgreementEnabled = 0x1 | 0x0
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/PostQuantumKeyAgreementEnabled
+```
+Value (string):
+```
+<enabled/> or <disabled/>
+```
+#### macOS
+```
+<dict>
+ <key>PostQuantumKeyAgreementEnabled</key>
+ <true/> | <false/>
+</dict>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "PostQuantumKeyAgreementEnabled": true | false
+ }
+}
+```
### Preferences
Set and lock preferences.
}
}'/>
```
+If you are using custom ADMX and ADML administrative templates in Intune, you can use this OMA-URI instead
+to workaround the limit on the length of strings. Put all of your JSON on one line.
+
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/PreferencesOneLine
+```
+Value (string):
+```
+<enabled/>
+<data id="JSONOneLine" value='{}'/>
+```
#### macOS
```
<dict>
Prevent Firefox from messaging the user in certain situations.
-`WhatsNew` Remove the "What's New" icon and menuitem.
+`WhatsNew` Remove the "What's New" icon and menuitem. (*Deprecated*)
`ExtensionRecommendations` If false, don't recommend extensions while the user is visiting web pages.
**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`, `browser.aboutwelcome.enabled`, `browser.preferences.moreFromMozilla`
+**Preferences Affected:** `browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons`, `browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features`, `browser.aboutwelcome.enabled`, `browser.preferences.moreFromMozilla`
#### 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
#### Windows (Intune)
OMA-URI:
```
-./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~UserMessaging/UserMessaging_WhatsNew
./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~UserMessaging/UserMessaging_ExtensionRecommendations
./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~UserMessaging/UserMessaging_FeatureRecommendations
./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~UserMessaging/UserMessaging_UrlbarInterventions
<dict>
<key>UserMessaging</key>
<dict>
- <key>WhatsNew</key>
- <true/> | <false/>
<key>ExtensionRecommendations</key>
<true/> | <false/>
<key>FeatureRecommendations</key>
{
"policies": {
"UserMessaging": {
- "WhatsNew": true | false,
"ExtensionRecommendations": true | false,
"FeatureRecommendations": true | false,
"UrlbarInterventions": true | false,
<enabled/>
<data id="WebsiteFilter" value="1http://example.org/*"/>
```
+If you are using custom ADMX and ADML administrative templates in Intune, you can use this OMA-URI instead
+to workaround the limit on the length of strings. Put all of your JSON on one line.
+
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/WebsiteFilterOneLine
+```
+Value (string):
+```
+<enabled/>
+<data id="JSONOneLine" value='{"Block": ["<all_urls>"],"Exceptions": ["http://example.org/*"]}'/>
+```
#### macOS
```
<dict>