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We would like to hardcode the Proxy Settings within Mozilla Firefox using Microsoft Group Policy on specific set of computers which are domain joined.

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  • 1 has this problem
  • Last reply by rahul.rane

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We would also like to restrict installation of Mozilla Firefox for users without administrative privileges as the same is available by design.

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

Place a file local-settings.js in the defaults\pref folder where you also find the file channel-prefs.js to specify using mozilla.cfg.

pref("general.config.filename", "mozilla.cfg");


These functions can be used in the mozilla.cfg file:

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

See also:

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Thanks for the response cor-el, this definitely works when the software is installed in the default directory or when we are aware of the installation directory however as non-administrator users can install this in their profile or anywhere where they have access it is difficult to determine the folder where the product is installed. Is there a method which can be used to determine where the product is installed and based on that criteria we can deploy the configuration files using AD GP.