X-Git-Url: https://git.p6c8.net/policy-templates.git/blobdiff_plain/dc7b52ed6597d6a4ed7a2379ae31f74309ef2c8c..d7a53278a3e6505d6b2ed50f4cc262e95f58329d:/README.md?ds=inline diff --git a/README.md b/README.md index 50fb47f..243049b 100644 --- a/README.md +++ b/README.md @@ -1,8 +1,8 @@ **These policies are in active development and so might contain changes that do not work with current versions of Firefox.** -**You should use the officially released versions (https://github.com/mozilla/policy-templates/releases) if you are deploying changes.** +**You should use the [officially released versions](https://github.com/mozilla/policy-templates/releases) if you are deploying changes.** -Policies can be specified using the Group Policy templates on Windows (https://github.com/mozilla/policy-templates/tree/master/windows), 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. +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`. | Policy Name | Description | --- | --- | @@ -23,6 +23,7 @@ Policies can be specified using the Group Policy templates on Windows (https://g | **[`DisableMasterPasswordCreation`](#disablemasterpasswordcreation)** | Remove the master password functionality. | **[`DisableAppUpdate`](#disableappupdate)** | Turn off application updates. | **[`DisableBuiltinPDFViewer`](#disablebuiltinpdfviewer)** | Disable the built in PDF viewer. +| **[`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. | **[`DisableFeedbackCommands`](#disablefeedbackcommands)** | Disable the menus for reporting sites. @@ -31,9 +32,9 @@ Policies can be specified using the Group Policy templates on Windows (https://g | **[`DisableFirefoxStudies`](#disablefirefoxstudies)** | Disable Firefox studies (Shield). | **[`DisableForgetButton`](#disableforgetbutton)** | Disable the "Forget" button. | **[`DisableFormHistory`](#disableformhistory)** | Turn off saving information on web forms and the search bar. +| **[`DisablePasswordReveal`](#disablepasswordreveal)** | Do not allow passwords to be revealed in saved logins. | **[`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. @@ -48,6 +49,7 @@ Policies can be specified using the Group Policy templates on Windows (https://g | **[`DefaultDownloadDirectory`](#defaultdownloaddirectory)** | Set the default download directory. | **[`DownloadDirectory`](#downloaddirectory)** | Set and lock the download directory. | **[`EnableTrackingProtection`](#enabletrackingprotection)** | Configure tracking protection. +| **[`EncryptedMediaExtensions`](#encryptedmediaextensions)** | Enable or disable Encrypted Media Extensions and optionally lock it. | **[`EnterprisePoliciesEnabled`](#enterprisepoliciesenabled)** | Enable policy support on macOS. | **[`Extensions`](#extensions)** | Control the installation, uninstallation and locking of extensions. | **[`ExtensionSettings`](#extensionsettings)** | Manage all aspects of extensions. @@ -59,6 +61,7 @@ Policies can be specified using the Group Policy templates on Windows (https://g | **[`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. | **[`LocalFileLinks`](#localfilelinks)** | Enable linking to local files by origin. +| **[`MasterPassword`](#masterpassword)** | Require or prevent using a master password. | **[`NetworkPrediction`](#networkprediction)** | Enable or disable network prediction (DNS prefetching). | **[`NewTabPage`](#newtabpage)** | Enable or disable the New Tab page. | **[`NoDefaultBookmarks`](#nodefaultbookmarks)** | Disable the creation of default bookmarks. @@ -67,7 +70,9 @@ Policies can be specified using the Group Policy templates on Windows (https://g | **[`OverrideFirstRunPage`](#overridefirstrunpage)** | Override the first run page. | **[`OverridePostUpdatePage`](#overridepostupdatepage)** | Override the upgrade page. | **[`PasswordManagerEnabled`](#passwordmanagerenabled)** | Remove (some) access to the password manager. +| **[`PDFjs`](#pdfjs)** | Disable or configure PDF.js, the built-in PDF viewer. | **[`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. | **[`Preferences`](#preferences)** | Set and lock some preferences. | **[`PromptForDownloadLocation`](#promptfordownloadlocation)** | Ask where to save each file before downloading. @@ -81,8 +86,8 @@ Policies can be specified using the Group Policy templates on Windows (https://g | **[`SearchEngines -> PreventInstalls`](#searchengines--preventinstalls)** | Prevent installing search engines from webpages. | **[`SearchEngines -> Remove`](#searchengines--remove)** | Hide built-in search engines. | **[`SearchEngines -> Add`](#searchengines--add)** | Add new search engines. -| **[`SecurityDevices`](#securitydevices)** | Install PKCS #11 modules. | **[`SearchSuggestEnabled`](#searchsuggestenabled)** | Enable search suggestions. +| **[`SecurityDevices`](#securitydevices)** | Install PKCS #11 modules. | **[`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. @@ -174,9 +179,11 @@ Configure sites that support integrated authentication. See https://developer.mozilla.org/en-US/docs/Mozilla/Integrated_authentication for more information. -**Compatibility:** Firefox 60, Firefox ESR 60 (AllowNonFQDN added in 62/60.2, AllowProxies added in 70/68.2, Locked added in 71/68.3)\ +`PrivateBrowsing` enables integrated authentication in prviate browsing. + +**Compatibility:** Firefox 60, Firefox ESR 60 (AllowNonFQDN added in 62/60.2, AllowProxies added in 70/68.2, Locked added in 71/68.3, PrivateBrowsing added in 77/68.9)\ **CCK2 Equivalent:** N/A\ -**Preferences Affected:** `network.negotiate-auth.trusted-uris`,`network.negotiate-auth.delegation-uris`,`network.automatic-ntlm-auth.trusted-uris`,`network.automatic-ntlm-auth.allow-non-fqdn`,`network.negotiate-auth.allow-non-fqdn`,`network.automatic-ntlm-auth.allow-proxies`,`network.negotiate-auth.allow-proxies` +**Preferences Affected:** `network.negotiate-auth.trusted-uris`,`network.negotiate-auth.delegation-uris`,`network.automatic-ntlm-auth.trusted-uris`,`network.automatic-ntlm-auth.allow-non-fqdn`,`network.negotiate-auth.allow-non-fqdn`,`network.automatic-ntlm-auth.allow-proxies`,`network.negotiate-auth.allow-proxies`,`network.auth.private-browsing-sso` #### Windows (GPO) ``` @@ -191,6 +198,7 @@ Software\Policies\Mozilla\Firefox\Authentication\AllowNonFQDN\NTLM = 0x1 | 0x0 Software\Policies\Mozilla\Firefox\Authentication\AllowProxies\SPNEGO = 0x1 | 0x0 Software\Policies\Mozilla\Firefox\Authentication\AllowProxies\NTLM = 0x1 | 0x0 Software\Policies\Mozilla\Firefox\Authentication\Locked = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\Authentication\PrivateBrowsing = 0x1 | 0x0 ``` #### Windows (Intune) OMA-URI: @@ -200,7 +208,6 @@ OMA-URI: Value (string): ``` - ``` OMA-URI: @@ -210,7 +217,6 @@ OMA-URI: Value (string): ``` - ``` OMA-URI: @@ -220,7 +226,6 @@ OMA-URI: Value (string): ``` - ``` OMA-URI: @@ -230,19 +235,24 @@ OMA-URI: Value (string): ``` - ``` OMA-URI: ``` -./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Homepage/HomepageStartPage +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Authentication/Authentication_Locked ``` Value (string): ``` - - - + or +``` +OMA-URI: +``` +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Authentication/Authentication_PrivateBrowsing +``` +Value (string): +``` + or ``` #### macOS ``` @@ -280,6 +290,8 @@ Value (string): Locked | + PrivateBrowsing + | ``` @@ -299,7 +311,8 @@ Value (string): "SPNEGO": true | false, "NTLM": true | false }, - "Locked": true | false + "Locked": true | false, + "PrivateBrowsing": true | false } } } @@ -932,6 +945,102 @@ Value (string): } } ``` +### DisabledCiphers +Disable specific cryptographic ciphers. + +--- +**Note:** + +This policy was updated in Firefox 78 to allow enabling ciphers as well. Setting the value to true disables the cipher, setting the value to false enables the cipher. Previously setting the value to true or false disabled the cipher. + +--- +**Compatibility:** Firefox 76, Firefox ESR 68.8 (TLS_RSA_WITH_AES_128_GCM_SHA256 and TLS_RSA_WITH_AES_256_GCM_SHA384 were added in Firefox 78)\ +**CCK2 Equivalent:** N/A\ +**Preferences Affected:** N/A + +#### Windows (GPO) +``` +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_DHE_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_DHE_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_3DES_EDE_CBC_SHA = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_128_GCM_SHA256 = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_256_GCM_SHA384 = 0x1 | 0x0 +``` +#### Windows (Intune) +OMA-URI: +``` +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_DHE_RSA_WITH_AES_128_CBC_SHA +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_DHE_RSA_WITH_AES_256_CBC_SHA +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_AES_128_CBC_SHA +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_AES_256_CBC_SHA +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_3DES_EDE_CBC_SHA +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_AES_128_GCM_SHA256 +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_AES_256_GCM_SHA384 +``` +Value (string): +``` + or +``` +#### macOS +``` + + DisabledCiphers + + TLS_DHE_RSA_WITH_AES_128_CBC_SHA + | + TLS_DHE_RSA_WITH_AES_256_CBC_SHA + | + TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA + | + TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA + | + TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 + | + TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 + | + TLS_RSA_WITH_AES_128_CBC_SHA + | + TLS_RSA_WITH_AES_256_CBC_SHA + | + TLS_RSA_WITH_3DES_EDE_CBC_SHA + | + TLS_RSA_WITH_AES_128_GCM_SHA256 + | + TLS_RSA_WITH_AES_256_GCM_SHA384 + | + + +``` +#### policies.json +``` +{ + "policies": { + "DisabledCiphers" { + "TLS_DHE_RSA_WITH_AES_128_CBC_SHA": true | false, + "TLS_DHE_RSA_WITH_AES_256_CBC_SHA": true | false, + "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA": true | false, + "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA": true | false, + "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256": true | false, + "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256": true | false, + "TLS_RSA_WITH_AES_128_CBC_SHA": true | false, + "TLS_RSA_WITH_AES_256_CBC_SHA": true | false, + "TLS_RSA_WITH_3DES_EDE_CBC_SHA": true | false + "TLS_RSA_WITH_AES_128_GCM_SHA256": true | false + "TLS_RSA_WITH_AES_256_GCM_SHA384": true | false + } + } +} +``` ### DisableDefaultBrowserAgent Prevent the default browser agent from taking any actions. Only applicable to Windows; other platforms don’t have the agent. @@ -1468,8 +1577,8 @@ Value (string): { "policies": { "DisableSecurityBypass": { - "InvalidCertificate": true false, - "SafeBrowsing": true false + "InvalidCertificate": true | false, + "SafeBrowsing": true | false } } } @@ -1673,6 +1782,41 @@ Software\Policies\Mozilla\Firefox\DNSOverHTTPS\ProviderURL = "URL_TO_ALTERNATE_P Software\Policies\Mozilla\Firefox\DNSOverHTTPS\Locked = 0x1 | 0x0 Software\Policies\Mozilla\Firefox\DNSOverHTTPS\ExcludedDomains\1 = "example.com" ``` +#### Windows (Intune) +OMA-URI: +``` +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DNSOverHTTPS/DNSOverHTTPS_Enabled +``` +Value (string): +``` + or +``` +OMA-URI: +``` +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DNSOverHTTPS/DNSOverHTTPS_ProviderURL +``` +Value (string): +``` + + +``` +OMA-URI: +``` +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DNSOverHTTPS/DNSOverHTTPS_Locked +``` +Value (string): +``` + or +``` +OMA-URI: +``` +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DNSOverHTTPS/DNSOverHTTPS_ExcludedDomains +``` +Value (string): +``` + + +``` #### macOS ``` @@ -1715,6 +1859,15 @@ Don't check if Firefox is the default browser at startup. ``` Software\Policies\Mozilla\Firefox\DontCheckDefaultBrowser = 0x1 | 0x0 ``` +#### Windows (Intune) +OMA-URI: +``` +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DontCheckDefaultBrowser +``` +Value (string): +``` + or +``` #### macOS ``` @@ -1743,6 +1896,16 @@ You can use ${home} for the native home directory. ``` Software\Policies\Mozilla\Firefox\DefaultDownloadDirectory = "${home}\Downloads" ``` +#### Windows (Intune) +OMA-URI: +``` +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DefaultDownloadDirectory +``` +Value (string): +``` + + +``` #### macOS ``` @@ -1777,6 +1940,16 @@ You can use ${home} for the native home directory. ``` Software\Policies\Mozilla\Firefox\DownloadDirectory = "${home}\Downloads" ``` +#### Windows (Intune) +OMA-URI: +``` +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DownloadDirectory +``` +Value (string): +``` + + +``` #### macOS ``` @@ -1863,14 +2036,62 @@ Value (string): { "policies": { "EnableTrackingProtection": { - "Value": [true, false], - "Locked": [true, false], - "Cryptomining": [true, false], - "Fingerprinting": [true, false], + "Value": true | false, + "Locked": true | false, + "Cryptomining": true | false, + "Fingerprinting": true | false, "Exceptions": ["https://example.com"] } } ``` +### EncryptedMediaExtensions +Enable or disable Encrypted Media Extensions and optionally lock it. + +If `Enabled` is set to false, encrypted media extensions (like Widevine) are not downloaded by Firefox unless the user consents to installing them. + +If `Locked` is set to true and `Enabled` is set to false, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them. + +**Compatibility:** Firefox 77, Firefox ESR 68.9\ +**CCK2 Equivalent:** N/A\ +**Preferences Affected:** `media.eme.enabled` + +#### Windows (GPO) +``` +Software\Policies\Mozilla\Firefox\EncryptedMediaExtensions\Enabled = 0x1 | 0x0 +Software\Policies\Mozilla\Firefox\EncryptedMediaExtensions\Locked = 0x1 | 0x0 +``` +#### Windows (Intune) +OMA-URI: +``` +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~EncryptedMediaExtensions/EncryptedMediaExtensions_Enabled +./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~EncryptedMediaExtensions/EncryptedMediaExtensions_Locked +``` +Value (string): +``` +or +``` +#### macOS +``` + + EncryptedMediaExtensions + + Enabled + | + + | + + +``` +#### policies.json +``` +{ + "policies": { + "EncryptedMediaExtensions": { + "Enabled": true | false, + "Locked": true | false + } +} +``` ### EnterprisePoliciesEnabled Enable policy support on macOS. @@ -1955,9 +2176,10 @@ The configuration for each extension is another dictionary that can contain the |         `force_installed`| The extension is automatically installed and can't be removed by the user. This option is not valid for the default configuration and requires an install_url. |         `normal_installed`| The extension is automatically installed but can be disabled by the user. This option is not valid for the default configuration and requires an install_url. | `install_url`| Maps to a URL indicating where Firefox can download a force_installed or normal_installed extension. If installing from the addons.mozilla.org, use the following URL (substituting SHORT_NAME from the URL on AMO), https://addons.mozilla.org/firefox/downloads/latest/SHORT_NAME/latest.xpi. If installing from the local file system, use a file:/// URL. Languages packs are available from https://releases.mozilla.org/pub/firefox/releases/VERSION/PLATFORM/xpi/LANGUAGE.xpi. -| `install_sources` | Each item in this list is an extension-style match pattern. Users will be able to easily install items from any URL that matches an item in this list. Both the location of the *.xpi file and the page where the download is started from (i.e. the referrer) must be allowed by these patterns. This setting can be used only for the default configuration. +| `install_sources` | A list of sources from which installing extensions is allowed. **This is unnecessary if you are only allowing the installation of certain extensions by ID.** Each item in this list is an extension-style match pattern. Users will be able to easily install items from any URL that matches an item in this list. Both the location of the *.xpi file and the page where the download is started from (i.e. the referrer) must be allowed by these patterns. This setting can be used only for the default configuration. If you want to allow the install of extensions from the recommended add-ons page, you must add `about:addons` to this list. | `allowed_types` | This setting whitelists the allowed types of extension/apps that can be installed in Firefox. The value is a list of strings, each of which should be one of the following: "extension", "theme", "dictionary", "langpack" This setting can be used only for the default configuration. -| `blocked_install_message` | This maps to a string specifying the error message to display to users if they're blocked from installing an extension. This setting allows you to append text to the generic error message displayed when the extension is blocked. This could be be used to direct users to your help desk, explain why a particular extension is blocked, or something else. +| `blocked_install_message` | This maps to a string specifying the error message to display to users if they're blocked from installing an extension. This setting allows you to append text to the generic error message displayed when the extension is blocked. This could be be used to direct users to your help desk, explain why a particular extension is blocked, or something else. This setting can be used only for the default configuration. +| `restricted_domains` | An array of domains on which content scripts can't be run. This setting can be used only for the default configuration. **Compatibility:** Firefox 69, Firefox ESR 68.1\ **CCK2 Equivalent:** N/A\ @@ -1969,7 +2191,7 @@ Software\Policies\Mozilla\Firefox\ExtensionSettings (REG_MULTI_SZ) = { "*": { "blocked_install_message": "Custom error message.", - "install_sources": ["https://addons.mozilla.org/"], + "install_sources": ["about:addons","https://addons.mozilla.org/"], "installation_mode": "blocked", "allowed_types": ["extension"] }, @@ -1990,7 +2212,7 @@ Value (string):