While the templates for the most recent version of Thunderbird will probably also work with older releases of Thunderbird, they may contain new policies which are not supported in older releases. We suggest to use the templates which correspond to the version of Thunderbird you are actually deploying.
The following table states for each policy, when Thunderbird started to support it, or when it has been deprecated. It also includes all policies currently supported by Firefox, which are not supported by Thunderbird.
| Policy/Property Name | supported since | deprecated after | 
|---|---|---|
| 3rdparty | 78.0 | |
| 3rdparty_Extensions | 78.0 | |
| 3rdparty_Extensions_[name] | 78.0 | |
| AllowFileSelectionDialogs | ||
| AllowedDomainsForApps | ||
| AppAutoUpdate | 75.0 | |
| AppUpdatePin | 104.0 | |
| AppUpdateURL | 68.0 | |
| Authentication | 78.0 | |
| Authentication_AllowNonFQDN | 78.0 | |
| Authentication_AllowNonFQDN_NTLM | 78.0 | |
| Authentication_AllowNonFQDN_SPNEGO | 78.0 | |
| Authentication_AllowProxies | 78.0 | |
| Authentication_AllowProxies_NTLM | 78.0 | |
| Authentication_AllowProxies_SPNEGO | 78.0 | |
| Authentication_Delegated | 78.0 | |
| Authentication_Locked | 78.0 | |
| Authentication_NTLM | 78.0 | |
| Authentication_PrivateBrowsing | 78.0 | |
| Authentication_SPNEGO | 78.0 | |
| AutoLaunchProtocolsFromOrigins | ||
| AutofillAddressEnabled | ||
| AutofillCreditCardEnabled | ||
| BackgroundAppUpdate | 91.0 | |
| BlockAboutAddons | 68.0 | |
| BlockAboutConfig | 68.0 | |
| BlockAboutProfiles | 68.0 | |
| BlockAboutSupport | 68.0 | |
| Bookmarks | ||
| CaptivePortal | 78.0 | |
| Certificates | 68.0 | |
| Certificates_ImportEnterpriseRoots | 68.0 | |
| Certificates_Install | 68.0 | |
| Containers | ||
| ContentAnalysis | ||
| Cookies | 78.0 | |
| Cookies_AcceptThirdParty | 78.0 | |
| Cookies_Allow | 78.0 | |
| Cookies_AllowSession | ||
| Cookies_Behavior | ||
| Cookies_BehaviorPrivateBrowsing | ||
| Cookies_Block | 78.0 | |
| Cookies_Default | 78.0 | |
| Cookies_ExpireAtSessionEnd | 78.0 | |
| Cookies_Locked | 78.0 | |
| Cookies_RejectTracker | ||
| DNSOverHTTPS | 91.0 | |
| DNSOverHTTPS_Enabled | 91.0 | |
| DNSOverHTTPS_ExcludedDomains | 91.0 | |
| DNSOverHTTPS_Fallback | ||
| DNSOverHTTPS_Locked | 91.0 | |
| DNSOverHTTPS_ProviderURL | 91.0 | |
| DefaultDownloadDirectory | 78.0 | |
| DisableAccounts | ||
| DisableAppUpdate | 68.0 | |
| DisableBuiltinPDFViewer | 91.0 | |
| DisableDefaultBrowserAgent | ||
| DisableDeveloperTools | 68.0 | |
| DisableEncryptedClientHello | ||
| DisableFeedbackCommands | ||
| DisableFirefoxAccounts | ||
| DisableFirefoxScreenshots | ||
| DisableFirefoxStudies | ||
| DisableForgetButton | ||
| DisableFormHistory | ||
| DisableMasterPasswordCreation | 68.0 | |
| DisablePasswordReveal | 78.0 | |
| DisablePocket | ||
| DisablePrivateBrowsing | ||
| DisableProfileImport | ||
| DisableProfileRefresh | ||
| DisableSafeMode | 78.0 | |
| DisableSecurityBypass | 68.0 | |
| DisableSecurityBypass_InvalidCertificate | 68.0 | |
| DisableSecurityBypass_SafeBrowsing | 68.0 | |
| DisableSetDesktopBackground | ||
| DisableSystemAddonUpdate | 77.0 | |
| DisableTelemetry | 78.0 | |
| DisableThirdPartyModuleBlocking | ||
| DisabledCiphers | 76.0 | |
| DisabledCiphers_TLS_AES_128_GCM_SHA256 | ||
| DisabledCiphers_TLS_AES_256_GCM_SHA384 | ||
| DisabledCiphers_TLS_CHACHA20_POLY1305_SHA256 | ||
| DisabledCiphers_TLS_DHE_RSA_WITH_AES_128_CBC_SHA | 76.0 | |
| DisabledCiphers_TLS_DHE_RSA_WITH_AES_256_CBC_SHA | 76.0 | |
| DisabledCiphers_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA | 102.0 | |
| DisabledCiphers_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 | 76.0 | |
| DisabledCiphers_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA | 102.0 | |
| DisabledCiphers_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 | 102.0 | |
| DisabledCiphers_TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 | 102.0 | |
| DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA | 76.0 | |
| DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 | 76.0 | |
| DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA | 76.0 | |
| DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 | 102.0 | |
| DisabledCiphers_TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | 102.0 | |
| DisabledCiphers_TLS_RSA_WITH_3DES_EDE_CBC_SHA | 76.0 | |
| DisabledCiphers_TLS_RSA_WITH_AES_128_CBC_SHA | 76.0 | |
| DisabledCiphers_TLS_RSA_WITH_AES_128_GCM_SHA256 | 91.0 | |
| DisabledCiphers_TLS_RSA_WITH_AES_256_CBC_SHA | 76.0 | |
| DisabledCiphers_TLS_RSA_WITH_AES_256_GCM_SHA384 | 91.0 | |
| DisplayBookmarksToolbar | ||
| DisplayMenuBar | ||
| DontCheckDefaultBrowser | ||
| DownloadDirectory | 78.0 | |
| EnableTrackingProtection | ||
| EncryptedMediaExtensions | ||
| ExemptDomainFileTypePairsFromFileTypeDownloadWarnings | ||
| ExtensionSettings | 68.0 | |
| ExtensionSettings_* | 89.0 | |
| ExtensionSettings_*_allowed_types | 89.0 | |
| ExtensionSettings_*_blocked_install_message | 89.0 | |
| ExtensionSettings_*_install_sources | 89.0 | |
| ExtensionSettings_*_installation_mode | 89.0 | |
| ExtensionSettings_*_restricted_domains | 89.0 | |
| ExtensionSettings_*_temporarily_allow_weak_signatures | ||
| ExtensionSettings_[name] | 68.0 | |
| ExtensionSettings_[name]_blocked_install_message | 68.0 | |
| ExtensionSettings_[name]_default_area | ||
| ExtensionSettings_[name]_install_url | 89.0 | |
| ExtensionSettings_[name]_installation_mode | 89.0 | |
| ExtensionSettings_[name]_private_browsing | 128.8.0, 136.0 | |
| ExtensionSettings_[name]_temporarily_allow_weak_signatures | ||
| ExtensionSettings_[name]_updates_disabled | 91.0 | |
| ExtensionUpdate | 68.0 | |
| Extensions | 68.0 | |
| Extensions_Install | 68.0 | |
| Extensions_Locked | 68.0 | |
| Extensions_Uninstall | 68.0 | |
| FirefoxHome | ||
| FirefoxSuggest | ||
| GoToIntranetSiteForSingleWordEntryInAddressBar | ||
| Handlers | 91.0 | |
| Handlers_(mimeTypes\|extensions\|schemes) | 91.0 | |
| Handlers_(mimeTypes\|extensions\|schemes)_[name] | 91.0 | |
| Handlers_(mimeTypes\|extensions\|schemes)_[name]_action | 91.0 | |
| Handlers_(mimeTypes\|extensions\|schemes)_[name]_ask | 91.0 | |
| Handlers_(mimeTypes\|extensions\|schemes)_[name]_handlers | 91.0 | |
| HardwareAcceleration | 78.0 | |
| Homepage | ||
| HttpAllowlist | ||
| HttpsOnlyMode | ||
| InAppNotification | 139.0 | |
| InAppNotification_Disabled | 139.0 | |
| InAppNotification_DonationEnabled | 139.0 | |
| InAppNotification_MessageEnabled | 139.0 | |
| InAppNotification_SurveyEnabled | 139.0 | |
| InstallAddonsPermission | 68.0 | |
| InstallAddonsPermission_Allow | 68.0 | |
| InstallAddonsPermission_Default | 68.0 | |
| LegacyProfiles | ||
| LegacySameSiteCookieBehaviorEnabled | ||
| LegacySameSiteCookieBehaviorEnabledForDomainList | ||
| LocalFileLinks | ||
| ManagedBookmarks | ||
| ManualAppUpdateOnly | 91.0 | |
| MicrosoftEntraSSO | ||
| NetworkPrediction | 91.0 | |
| NewTabPage | ||
| NoDefaultBookmarks | ||
| OfferToSaveLogins | 91.0 | |
| OfferToSaveLoginsDefault | 91.0 | |
| OverrideFirstRunPage | ||
| OverridePostUpdatePage | ||
| PDFjs | 91.0 | |
| PDFjs_EnablePermissions | 91.0 | |
| PDFjs_Enabled | 91.0 | |
| PasswordManagerEnabled | 78.0 | |
| PasswordManagerExceptions | ||
| Permissions | ||
| PictureInPicture | ||
| PopupBlocking | ||
| PostQuantumKeyAgreementEnabled | ||
| Preferences | 68.0 | |
| Preferences_[name] | 91.0 | |
| Preferences_[name]_Status | 91.0 | |
| Preferences_[name]_Type | ||
| Preferences_[name]_Value | 91.0 | |
| Preferences_accessibility.force_disabled | 78.0 | 89.0 | 
| Preferences_browser.cache.disk.enable | 78.0 | 89.0 | 
| Preferences_browser.cache.disk.parent_directory | 68.0 | 89.0 | 
| Preferences_browser.fixup.dns_first_for_single_words | 68.0 | 77.0 | 
| Preferences_browser.safebrowsing.malware.enabled | 78.0 | 89.0 | 
| Preferences_browser.safebrowsing.phishing.enabled | 78.0 | 89.0 | 
| Preferences_browser.search.update | 78.0 | 89.0 | 
| Preferences_browser.urlbar.suggest.bookmark | 68.0 | 77.0 | 
| Preferences_browser.urlbar.suggest.history | 68.0 | 77.0 | 
| Preferences_browser.urlbar.suggest.openpage | 68.0 | 77.0 | 
| Preferences_datareporting.policy.dataSubmissionPolicyBypassNotification | 78.0 | 89.0 | 
| Preferences_dom.allow_scripts_to_close_windows | 78.0 | 89.0 | 
| Preferences_dom.disable_window_flip | 78.0 | 89.0 | 
| Preferences_dom.disable_window_move_resize | 78.0 | 89.0 | 
| Preferences_dom.event.contextmenu.enabled | 78.0 | 89.0 | 
| Preferences_dom.keyboardevent.keypress.hack.dispatch_non_printable_keys.addl | 78.0 | 89.0 | 
| Preferences_dom.keyboardevent.keypress.hack.use_legacy_keycode_and_charcode.addl | 78.0 | 89.0 | 
| Preferences_extensions.blocklist.enabled | 78.0 | 89.0 | 
| Preferences_geo.enabled | 78.0 | 89.0 | 
| Preferences_intl.accept_languages | 78.0 | 89.0 | 
| Preferences_network.IDN_show_punycode | 68.0 | 89.0 | 
| Preferences_network.dns.disableIPv6 | 78.0 | 89.0 | 
| Preferences_places.history.enabled | 78.0 | 89.0 | 
| Preferences_print.save_print_settings | 78.0 | 89.0 | 
| Preferences_security.default_personal_cert | 78.0 | 89.0 | 
| Preferences_security.mixed_content.block_active_content | 78.0 | 89.0 | 
| Preferences_security.osclientcerts.autoload | 78.0 | 89.0 | 
| Preferences_security.ssl.errorReporting.enabled | 78.0 | 89.0 | 
| Preferences_security.tls.hello_downgrade_check | 78.0 | 89.0 | 
| Preferences_widget.content.gtk-theme-override | 78.0 | 89.0 | 
| PrimaryPassword | 91.0 | |
| PrintingEnabled | ||
| PrivateBrowsingModeAvailability | ||
| PromptForDownloadLocation | 78.0 | |
| Proxy | 68.0 | |
| Proxy_AutoConfigURL | 68.0 | |
| Proxy_AutoLogin | 68.0 | |
| Proxy_FTPProxy | 68.0 | |
| Proxy_HTTPProxy | 68.0 | |
| Proxy_Locked | 68.0 | |
| Proxy_Mode | 68.0 | |
| Proxy_Passthrough | 68.0 | |
| Proxy_SOCKSProxy | 68.0 | |
| Proxy_SOCKSVersion | 68.0 | |
| Proxy_SSLProxy | 68.0 | |
| Proxy_UseHTTPProxyForAllProtocols | 68.0 | |
| Proxy_UseProxyForDNS | 68.0 | |
| RequestedLocales | 68.0 | |
| SSLVersionMax | 68.0 | |
| SSLVersionMin | 68.0 | |
| SanitizeOnShutdown | ||
| SearchBar | ||
| SearchEngines | 108.0 | |
| SearchEngines_Add | 108.0 | |
| SearchEngines_Default | 108.0 | |
| SearchEngines_DefaultPrivate | 108.0 | |
| SearchEngines_PreventInstalls | 108.0 | |
| SearchEngines_Remove | 108.0 | |
| SearchSuggestEnabled | ||
| SecurityDevices | ||
| ShowHomeButton | ||
| SkipTermsOfUse | ||
| StartDownloadsInTempDirectory | ||
| SupportMenu | ||
| TranslateEnabled | ||
| UseSystemPrintDialog | ||
| UserMessaging | ||
| WebsiteFilter | ||
| WindowsSSO |