}
}
```
+### DisableSysAddonUpdate
+This policy prevents system add-ons from being updated or installed.
+```
+{
+ "policies": {
+ "DisableSysAddonUpdate": true
+ }
+}
+```
### DisplayBookmarksToolbar
This policy turns on the bookmarks toolbar by default. A user can still turn it off and it will stay off.
```