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lock preferences

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  • 3 have this problem
  • Last reply by cor-el

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Is there a way to lock the preferences file in Firefox 6.0 so that settings cannot be changed? I used to be able to do this in 4.0.


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The instructions haven't changed and are still the same.

You can use a mozilla.cfg file in the Firefox program folder to lock prefs or specify default values.

Place a file local-settings.js in the defaults\pref folder to specify using mozilla.cfg.

pref("general.config.filename", "mozilla.cfg");
pref("general.config.obscure_value", 0); // only needed if you want to disable disable the byte-shift

You can use these functions in mozilla.cfg:

defaultPref();  // set new default value
pref(); // set pref, but allow changes
lockPref();  // lock pref, disallow changes