| **[`DisableSafeMode`](#disablesafemode)** | Disable safe mode within the browser.
| **[`DisableSecurityBypass`](#disablesecuritybypass)** | Prevent the user from bypassing security in certain cases.
| **[`DisableSetDesktopBackground`](#disablesetdesktopbackground)** | Remove the "Set As Desktop Background..." menuitem when right clicking on an image.
-| **[`DisableSystemAddonUpdate`](#disablesystemaddonupdate)** | Prevent system add-ons from being installed or update.
+| **[`DisableSystemAddonUpdate`](#disablesystemaddonupdate)** | Prevent system add-ons from being installed or updated.
| **[`DisableTelemetry`](#disabletelemetry)** | DisableTelemetry
| **[`DisplayBookmarksToolbar`](#displaybookmarkstoolbar)** | Set the initial state of the bookmarks toolbar.
| **[`DisplayMenuBar`](#displaymenubar)** | Set the state of the menubar.
| **[`ExtensionSettings`](#extensionsettings)** | Manage all aspects of extensions.
| **[`ExtensionUpdate`](#extensionupdate)** | Control extension updates.
| **[`FirefoxHome`](#firefoxhome)** | Customize the Firefox Home page.
-| **[`FlashPlugin`](#flashplugin)** | Configure the default Flash plugin policy as well as origins for which Flash is allowed.
+| **[`FlashPlugin (Deprecated)`](#flashplugin-deprecated)** | Configure the default Flash plugin policy as well as origins for which Flash is allowed.
| **[`Handlers`](#handlers)** | Configure default application handlers.
| **[`HardwareAcceleration`](#hardwareacceleration)** | Control hardware acceleration.
| **[`Homepage`](#homepage)** | Configure the default homepage and how Firefox starts.
| **[`LegacySameSiteCookieBehaviorEnabledForDomainList`](#legacysamesitecookiebehaviorenabledfordomainlist)** | Revert to legacy SameSite behavior for cookies on specified sites.
| **[`LocalFileLinks`](#localfilelinks)** | Enable linking to local files by origin.
| **[`ManagedBookmarks`](#managedbookmarks)** | Configures a list of bookmarks managed by an administrator that cannot be changed by the user.
-| **[`ManualAppUpdateOnly`](#manualappupdateonly)** | Allow manual updates only and do not notify the user about updates..
+| **[`ManualAppUpdateOnly`](#manualappupdateonly)** | Allow manual updates only and do not notify the user about updates.
| **[`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.
| **[`OverrideFirstRunPage`](#overridefirstrunpage)** | Override the first run page.
| **[`OverridePostUpdatePage`](#overridepostupdatepage)** | Override the upgrade page.
| **[`PasswordManagerEnabled`](#passwordmanagerenabled)** | Remove (some) access to the password manager.
+| **[`PasswordManagerExceptions`](#passwordmanagerexceptions)** | Prevent Firefox from saving passwords for specific sites.
| **[`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.
Value (string):
```
<enabled/>
-<data id="Cookies_Allow" value="1https://example.com"/>
+<data id="Permissions" value="1https://example.com"/>
```
OMA-URI:
```
Value (string):
```
<enabled/>
-<data id="Cookies_Allow" value="1https://example.edu"/>
+<data id="Permissions" value="1https://example.edu"/>
```
OMA-URI:
```
Value (string):
```
<enabled/>
-<data id="Cookies_Block" value="1https://example.org"/>
+<data id="Permissions" value="1https://example.org"/>
```
OMA-URI:
```
}
```
### DisableSystemAddonUpdate
-Prevent system add-ons from being installed or update.
+Prevent system add-ons from being installed or updated.
**Compatibility:** Firefox 60, Firefox ESR 60\
**CCK2 Equivalent:** N/A\
}
}
```
+### PasswordManagerExceptions
+Prevent Firefox from saving passwords for specific sites.
+
+The sites are specified as a list of origins.
+
+**Compatibility:** Firefox 101\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** N/A
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\PasswordManagerExceptions\1 = "https://example.org"
+Software\Policies\Mozilla\Firefox\PasswordManagerExceptions\2 = "https://example.edu"
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/PasswordManagerExceptions
+```
+Value (string):
+```
+<enabled/>
+<data id="List" value="1https://example.org2https://example.edu"/>
+```
+#### macOS
+```
+<dict>
+ <key>PasswordManagerExceptions</key>
+ <array>
+ <string>https://example.org</string>
+ <string>https://example.edu</string>
+ </array>
+</dict>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "PasswordManagerExceptions": ["https://example.org",
+ "https://example.edu"]
+ }
+}
+```
+
### PDFjs
Disable or configure PDF.js, the built-in PDF viewer.