The templates of a newer version of Thunderbird usually also work with older releases, but they may contain policies which older releases don’t support. We suggest using the templates which correspond to the version of Thunderbird you are deploying.
The following table states for each policy and setting since when Thunderbird supports it, when it was removed, and whether Firefox supports it.
| Policy/Property Name | Thunderbird | Removed after | Firefox |
|---|---|---|---|
3rdparty |
78.0 | ✅ | |
3rdparty_Extensions |
78.0 | ✅ | |
3rdparty_Extensions_[name] |
78.0 | ✅ | |
AIControls |
❌ | ✅ | |
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 |
❌ | ✅ | |
BrowserDataBackup |
❌ | ✅ | |
CNSA2KeyAgreementEnabled |
❌ | ✅ | |
CaptivePortal |
78.0 | ✅ | |
Certificates |
68.0 | ✅ | |
Certificates_ImportEnterpriseRoots |
68.0 | ✅ | |
Certificates_Install |
68.0 | ✅ | |
ClearOnShutdown |
❌ | ✅ | |
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 | ✅ | |
DefaultBrowserSettingEnabled |
❌ | ✅ | |
DefaultDownloadDirectory |
78.0 | ✅ | |
DefaultSerialGuardSetting |
❌ | ✅ | |
DisableAccounts |
❌ | ✅ | |
DisableAppUpdate |
68.0 | ✅ | |
DisableBuiltinPDFViewer |
91.0 | ✅ | |
DisableChat |
157.0 | ❌ | |
DisableCommunity |
157.0 | ❌ | |
DisableDataCollectionSettings |
156.0 | ❌ | |
DisableDefaultBrowserAgent |
❌ | ✅ | |
DisableDeveloperTools |
68.0 | ✅ | |
DisableEncryptedClientHello |
❌ | ✅ | |
DisableExperimentalFeatures |
155.0 | ❌ | |
DisableFeedbackCommands |
❌ | ✅ | |
DisableFileLink |
157.0 | ❌ | |
DisableFirefoxAccounts |
❌ | ✅ | |
DisableFirefoxScreenshots |
❌ | ✅ | |
DisableFirefoxStudies |
❌ | ✅ | |
DisableForgetButton |
❌ | ✅ | |
DisableFormHistory |
❌ | ✅ | |
DisableLaunchOnLogin |
❌ | ✅ | |
DisableMacOSUserPolicies |
160.0 | ✅ | |
DisableMasterPasswordCreation |
68.0 | ✅ | |
DisableMessageForwardingFilters |
156.0 | ❌ | |
DisablePasswordReveal |
78.0 | ✅ | |
DisablePocket |
❌ | ✅ | |
DisablePrivateBrowsing |
❌ | ✅ | |
DisableProfileImport |
❌ | ✅ | |
DisableProfileRefresh |
❌ | ✅ | |
DisableQRExport |
155.0 | ❌ | |
DisableRemoteImprovements |
❌ | ✅ | |
DisableRemoteSettingsAndAcceptSecurityConsequences |
❌ | ✅ | |
DisableSafeMode |
78.0 | ✅ | |
DisableSecurityBypass |
68.0 | ✅ | |
DisableSecurityBypass_InvalidCertificate |
68.0 | ✅ | |
DisableSecurityBypass_SafeBrowsing |
68.0 | ✅ | |
DisableSetDesktopBackground |
❌ | ✅ | |
DisableSystemAddonUpdate |
77.0 | ✅ | |
DisableTelemetry |
78.0 | ✅ | |
DisableThirdPartyModuleBlocking |
❌ | ✅ | |
DisableUpdateSettings |
156.0 | ❌ | |
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_permissions |
❌ | ✅ | |
ExtensionSettings_*_allowed_types |
89.0 | ✅ | |
ExtensionSettings_*_blocked_install_message |
89.0 | ✅ | |
ExtensionSettings_*_blocked_permissions |
❌ | ✅ | |
ExtensionSettings_*_install_sources |
89.0 | ✅ | |
ExtensionSettings_*_installation_mode |
89.0 | ✅ | |
ExtensionSettings_*_restricted_domains |
89.0 | ✅ | |
ExtensionSettings_*_runtime_allowed_hosts |
❌ | ✅ | |
ExtensionSettings_*_runtime_blocked_hosts |
❌ | ✅ | |
ExtensionSettings_*_temporarily_allow_weak_signatures |
❌ | ✅ | |
ExtensionSettings_[name] |
68.0 | ✅ | |
ExtensionSettings_[name]_allowed_permissions |
❌ | ✅ | |
ExtensionSettings_[name]_blocked_install_message |
68.0 | ✅ | |
ExtensionSettings_[name]_blocked_permissions |
❌ | ✅ | |
ExtensionSettings_[name]_default_area |
❌ | ✅ | |
ExtensionSettings_[name]_install_url |
89.0 | ✅ | |
ExtensionSettings_[name]_installation_mode |
89.0 | ✅ | |
ExtensionSettings_[name]_private_browsing |
136.0, 128.8.0esr | ✅ | |
ExtensionSettings_[name]_runtime_allowed_hosts |
❌ | ✅ | |
ExtensionSettings_[name]_runtime_blocked_hosts |
❌ | ✅ | |
ExtensionSettings_[name]_temporarily_allow_weak_signatures |
❌ | ✅ | |
ExtensionSettings_[name]_update_url |
154.0, 153.0.2esr | ✅ | |
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 |
❌ | ✅ | |
GenerativeAI |
❌ | ✅ | |
GoToIntranetSiteForSingleWordEntryInAddressBar |
❌ | ✅ | |
Handlers |
91.0 | ✅ | |
Handlers_extensions |
91.0 | ✅ | |
Handlers_extensions_[name] |
91.0 | ✅ | |
Handlers_extensions_[name]_action |
91.0 | ✅ | |
Handlers_extensions_[name]_ask |
91.0 | ✅ | |
Handlers_extensions_[name]_handlers |
91.0 | ✅ | |
Handlers_mimeTypes |
91.0 | ✅ | |
Handlers_mimeTypes_[name] |
91.0 | ✅ | |
Handlers_mimeTypes_[name]_action |
91.0 | ✅ | |
Handlers_mimeTypes_[name]_ask |
91.0 | ✅ | |
Handlers_mimeTypes_[name]_handlers |
91.0 | ✅ | |
Handlers_schemes |
91.0 | ✅ | |
Handlers_schemes_[name] |
91.0 | ✅ | |
Handlers_schemes_[name]_action |
91.0 | ✅ | |
Handlers_schemes_[name]_ask |
91.0 | ✅ | |
Handlers_schemes_[name]_handlers |
91.0 | ✅ | |
HardwareAcceleration |
78.0 | ✅ | |
Homepage |
❌ | ✅ | |
HttpAllowlist |
❌ | ✅ | |
HttpsOnlyMode |
❌ | ✅ | |
IPProtectionAvailable |
❌ | ✅ | |
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 |
❌ | ✅ | |
LocalNetworkAccess |
❌ | ✅ | |
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 | ✅ | |
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 | ✅ | |
RelaunchRequired |
❌ | ✅ | |
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 |
152.0 | ✅ | |
SecurityDevices_Add |
152.0 | ✅ | |
SecurityDevices_Add_[name] |
152.0 | ✅ | |
SecurityDevices_Delete |
152.0 | ✅ | |
SecurityDevices_[name] |
152.0 | ✅ | |
ShowHomeButton |
❌ | ✅ | |
SitePolicies |
❌ | ✅ | |
SkipTermsOfUse |
❌ | ✅ | |
StartDownloadsInTempDirectory |
❌ | ✅ | |
SupportMenu |
❌ | ✅ | |
TranslateEnabled |
❌ | ✅ | |
UseSystemPrintDialog |
❌ | ✅ | |
UserMessaging |
❌ | ✅ | |
VisualSearchEnabled |
❌ | ✅ | |
WebsiteFilter |
❌ | ✅ | |
WindowsSSO |
❌ | ✅ | |
XSLTEnabled |
❌ | ✅ |