To debug or identify the appropriate preferences to set, you can use the special browser URLs.
Stored in preferences object viewable at:
- Edge: edge://prefs-internals/
- Chrome: chrome://prefs-internals/
Stores "managed" permissions. Settings specified here will take effect when the profile is launched.
Visit about:profiles in Firefox to see paths where profile is stored.
Open the files with an editor to see the internals.