| **[`DisableSystemAddonUpdate`](#disablesystemaddonupdate)** | Prevent system add-ons from being installed or update.
| **[`DisableTelemetry`](#disabletelemetry)** | DisableTelemetry
| **[`DisplayBookmarksToolbar`](#displaybookmarkstoolbar)** | Set the initial state of the bookmarks toolbar.
-| **[`DisplayMenuBar`](#displaymenubar)** | Set the initial state of the menubar.
+| **[`DisplayMenuBar (Deprecated)`](#displaymenubar-deprecated)** | Set the initial state of the menubar.
+| **[`DisplayMenuBar`](#displaymenubar)** | Set the state of the menubar.
| **[`DNSOverHTTPS`](#dnsoverhttps)** | Configure DNS over HTTPS.
| **[`DontCheckDefaultBrowser`](#dontcheckdefaultbrowser)** | Don't check if Firefox is the default browser at startup.
| **[`DefaultDownloadDirectory`](#defaultdownloaddirectory)** | Set the default download directory.
}
}
```
-### DisplayMenuBar
+### DisplayMenuBar (Deprecated)
Set the initial state of the menubar. A user can still hide it and it will stay hidden.
**Compatibility:** Firefox 60, Firefox ESR 60 (Windows, some Linux)\
}
}
```
+### DisplayMenuBar
+Set the state of the menubar.
+
+`always` means the menubar is shown and cannot be hidden.
+
+`never` means the menubar is hidden and cannot be shown.
+
+`default-on` means the menubar is on by default but can be hidden.
+
+`default-off` means the menubar is off by default but can be shown.
+
+**Compatibility:** Firefox 73, Firefox ESR 68.5 (Windows, some Linux)\
+**CCK2 Equivalent:** `displayMenuBar`\
+**Preferences Affected:** N/A
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\DisplayMenuBar = "always", "never", "default-on", "default-off"
+```
+#### macOS
+```
+<dict>
+ <key>DisplayMenuBar</key>
+ <string>always | never | default-on | default-off</string>
+</dict>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "DisplayMenuBar": "always", "never", "default-on", "default-off"
+ }
+}
+```
### DNSOverHTTPS
Configure DNS over HTTPS.
<key>Proxy</key>
<dict>
<key>Mode</key>
- <string>none | system | manual | autoDetect| autoConfig</string>
+ <string>none | system | manual | autoDetect | autoConfig</string>
<key>Locked</key>
<true> | </false>
<key>HTTPProxy</key>