| **[`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.
+| **[`WindowsSSO`](#windowssso)** | Allow Windows single sign-on for Microsoft, work, and school accounts.
### 3rdparty
**Compatibility:** Firefox 75, Firefox ESR 68.7\
**CCK2 Equivalent:** N/A\
-**Preferences Affected:** app.update.auto
+**Preferences Affected:** `app.update.auto`
#### Windows (GPO)
```
Configure sites that support integrated authentication.
-See https://developer.mozilla.org/en-US/docs/Mozilla/Integrated_authentication for more information.
+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.
`PrivateBrowsing` enables integrated authentication in private browsing.
}
```
### AutoLaunchProtocolsFromOrigins
-Define a list of external protocols that can be used from listed origins without prompting the user.
+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.
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.
**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`
+**Preferences Affected:** `network.cookie.cookieBehavior`, `network.cookie.lifetimePolicy`
#### Windows (GPO)
```
**Compatibility:** Firefox 60, Firefox ESR 60\
**CCK2 Equivalent:** `disableFormFill`\
-**Preferences Affected:** ` browser.formfill.enable`
+**Preferences Affected:** `browser.formfill.enable`
#### Windows (GPO)
```
**Compatibility:** Firefox 60, Firefox ESR 60\
**CCK2 Equivalent:** N/A\
-**Preferences Affected:** `security.certerror.hideAddException`,`browser.safebrowsing.allowOverride`
+**Preferences Affected:** `security.certerror.hideAddException`, `browser.safebrowsing.allowOverride`
#### Windows (GPO)
```
**Compatibility:** Firefox 60, Firefox ESR 60\
**CCK2 Equivalent:** `disableTelemetry`\
-**Preferences Affected:** `datareporting.healthreport.uploadEnabled,datareporting.policy.dataSubmissionEnabled,toolkit.telemetry.archive.enabled`
+**Preferences Affected:** `datareporting.healthreport.uploadEnabled`, `datareporting.policy.dataSubmissionEnabled`, `toolkit.telemetry.archive.enabled`
#### Windows (GPO)
```
**Compatibility:** Firefox 63, Firefox ESR 68 (ExcludedDomains added in 75/68.7)\
**CCK2 Equivalent:** N/A\
-**Preferences Affected:** `network.trr.mode`,`network.trr.uri`
+**Preferences Affected:** `network.trr.mode`, `network.trr.uri`
#### Windows (GPO)
```
**Compatibility:** Firefox 68, Firefox ESR 68\
**CCK2 Equivalent:** N/A\
-**Preferences Affected:** `browser.download.dir`,`browser.download.folderList`
+**Preferences Affected:** `browser.download.dir`, `browser.download.folderList`
#### Windows (GPO)
```
**Compatibility:** Firefox 68, Firefox ESR 68\
**CCK2 Equivalent:** N/A\
-**Preferences Affected:** `browser.download.dir`,`browser.download.folderList`,`browser.download.useDownloadDir`
+**Preferences Affected:** `browser.download.dir`, `browser.download.folderList`, `browser.download.useDownloadDir`
#### Windows (GPO)
```
**Compatibility:** Firefox 60, Firefox ESR 60 (Cryptomining and Fingerprinting added in 70/68.2, Exceptions added in 73/68.5)\
**CCK2 Equivalent:** N/A\
-**Preferences Affected:** `privacy.trackingprotection.enabled`,`privacy.trackingprotection.pbmode.enabled`,`privacy.trackingprotection.cryptomining.enabled`,`privacy.trackingprotection.fingerprinting.enabled`
+**Preferences Affected:** `privacy.trackingprotection.enabled`, `privacy.trackingprotection.pbmode.enabled`, `privacy.trackingprotection.cryptomining.enabled`, `privacy.trackingprotection.fingerprinting.enabled`
#### Windows (GPO)
```
**Compatibility:** Firefox 68, Firefox ESR 68\
**CCK2 Equivalent:** N/A\
-**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`
+**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`
#### Windows (GPO)
```
**Compatibility:** Firefox 60, Firefox ESR 60 (StartPage was added in Firefox 60, Firefox ESR 60.4, homepage-locked added in Firefox 78)\
**CCK2 Equivalent:** `homePage`,`lockHomePage`\
-**Preferences Affected:** `browser.startup.homepage`,`browser.startup.page`
+**Preferences Affected:** `browser.startup.homepage`, `browser.startup.page`
#### Windows (GPO)
```
**Compatibility:** Firefox 67, Firefox ESR 60.7\
**CCK2 Equivalent:** N/A\
-**Preferences Affected:** `network.dns.disablePrefetch`,`network.dns.disablePrefetchFromHTTPS`
+**Preferences Affected:** `network.dns.disablePrefetch`, `network.dns.disablePrefetchFromHTTPS`
#### Windows (GPO)
```
**Compatibility:** Firefox 77, Firefox ESR 68.9\
**CCK2 Equivalent:** N/A\
-**Preferences Affected:** `pdfjs.diabled`,`pdfjs.enablePermissions`
+**Preferences Affected:** `pdfjs.diabled`, `pdfjs.enablePermissions`
#### Windows (GPO)
```
```
{
"policies": {
- "PSFjs": {
+ "PDFjs": {
"Enabled": true | false,
"EnablePermissions": true | false
}
**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)\
**CCK2 Equivalent:** N/A\
-**Preferences Affected:** `permissions.default.camera`,`permissions.default.microphone`,`permissions.default.geo`,`permissions.default.desktop-notification`,`media.autoplay.default`.`permissions.default.xr`
+**Preferences Affected:** `permissions.default.camera`, `permissions.default.microphone`, `permissions.default.geo`, `permissions.default.desktop-notification`, `media.autoplay.default`, `permissions.default.xr`
#### Windows (GPO)
```
| If true, client certificates are loaded from the operating system certificate store.
| security.ssl.errorReporting.enabled | boolean | true
| If false, SSL errors cannot be sent to Mozilla.
+| security.tls.enable_0rtt_data | boolean | true
+| If false, TLS early data is turned off (Firefox 93, Firefox 91.2, Firefox 78.15).
| security.tls.hello_downgrade_check | boolean | true
| If false, the TLS 1.3 downgrade check is disabled.
| security.tls.version.enable-deprecated | boolean | false
-| If true, browser will accept TLS 1.0. and TLS 1.1 (Firefox 86, Firefox 78.8)
+| If true, browser will accept TLS 1.0. and TLS 1.1 (Firefox 86, Firefox 78.8).
| security.warn_submit_secure_to_insecure | boolean | true
| If false, no warning is shown when submitting s form from https to http.
**Compatibility:** Firefox 60, Firefox ESR 60\
**CCK2 Equivalent:** `networkProxy*`\
-**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`
+**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`
#### Windows (GPO)
```
**Compatibility:** Firefox 68, Firefox ESR 68 (Locked added in 74/68.6)\
**CCK2 Equivalent:** N/A\
-**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`
+**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`
#### Windows (GPO)
```
Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Cache = 0x1 | 0x0
**Compatibility:** Firefox 60, Firefox ESR 60\
**CCK2 Equivalent:** N/A\
-**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`
+**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`
#### Windows (GPO)
```
Software\Policies\Mozilla\Firefox\SanitizeOnShutdown = 0x1 | 0x0
`SuggestURLTemplate` is a search suggestions URL with {searchTerms} to substitute for the search term.
-**Compatibility:** Firefox ESR 60 (POST support in Firefox ESR 68)\
+`Encoding` is the query charset for the engine. It defaults to UTF-8.
+
+**Compatibility:** Firefox ESR 60 (POST support in Firefox ESR 68, Encoding support in Firefox 91)\
**CCK2 Equivalent:** `searchplugins`\
**Preferences Affected:** N/A
**Compatibility:** Firefox 68, Firefox ESR 68\
**CCK2 Equivalent:** N/A\
-**Preferences Affected:** `browser.urlbar.suggest.searches`,`browser.search.suggest.enabled`
+**Preferences Affected:** `browser.urlbar.suggest.searches`, `browser.search.suggest.enabled`
#### Windows (GPO)
```
**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`
+**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`
#### Windows (GPO)
```
```
Value (string):
```
-<enabled/>
-<data id="WebsiteFilter" value="1<all_urls>"/>
+<enabled/> <data id="WebsiteFilter" value="1<all_urls>"/>
```
OMA-URI:
```
}
}
```
+### WindowsSSO
+Allow Windows single sign-on for Microsoft, work, and school accounts.
+
+If this policy is set to true, Firefox will use credentials stored in Windows to sign in to Microsoft, work, and school accounts.
+
+**Compatibility:** Firefox 91\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** `network.http.windows-sso.enabled`
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\WindowsSSO = 0x1 | 0x0
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/WindowsSSO
+```
+Value (string):
+```
+<enabled/> or <disabled/>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "WindowsSSO": true | false
+ }
+}
+```