+### PrivateBrowsingModeAvailability
+Set availability of private browsing mode.
+
+Possible values are `0` (Private Browsing mode is available), `1` (Private Browsing mode not available), and `2`(Private Browsing mode is forced).
+
+This policy supersedes [`DisablePrivateBrowsing`](#disableprivatebrowsing)
+
+Note: This policy missed Firefox ESR 128.2, but it will be in Firefox ESR 128.3.
+
+**Compatibility:** Firefox 130, Firefox ESR 128.3\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** N/A
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\PrivateBrowsingModeAvailability = 0x0 | 0x1 | 0x2
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/PrivateBrowsingModeAvailability
+```
+Value (string):
+```
+<enabled/>
+<data id="PrivateBrowsingModeAvailability" value="0 | 1 | 2"/>
+```
+#### macOS
+```
+<dict>
+ <key>PrivateBrowsingModeAvailability</key>
+ <integer>0 | 1 | 2</integer>
+</dict>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "PrivateBrowsingModeAvailability": 0 | 1 | 2
+ }
+}
+```