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Sccm install Firefox, now get error cant open program. Failed to read the configuration file. Please contact your system administrato

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I used a script to install it from this site. https://www.itsupportguides.com/configmgr-sccm/install-and-configure-firefox-silently/

I followed the instructions exactly as it on that site now none of my users can use firefox. they get the failed to read config file and program doenst launch.

I used a script to install it from this site. https://www.itsupportguides.com/configmgr-sccm/install-and-configure-firefox-silently/ I followed the instructions exactly as it on that site now none of my users can use firefox. they get the failed to read config file and program doenst launch.

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You get this error message when there is a .js (local-settings.js) file in the "defaults\pref" folder that specifies to process the mozilla.cfg file, but the mozilla.cfg isn't found.

Did you make sure that the mozilla.cfg doesn't have a hidden .txt file extension?


You can use the mozilla.cfg file in the Firefox program folder to set or lock preferences and run privileged JavaScript code.

A local-settings.js file needs to be placed in the "defaults/pref" folder where also the channel-prefs.js file is located to specify using mozilla.cfg.

pref("general.config.filename", "mozilla.cfg");
pref("general.config.obscure_value", 0);

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

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

The mozilla.cfg file needs to start with a comment line (//).

See Configuration:

See also:

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You get this error message when there is a .js (local-settings.js) file in the "defaults\pref" folder that specifies to process the mozilla.cfg file, but the mozilla.cfg isn't found.

Did you make sure that the mozilla.cfg doesn't have a hidden .txt file extension?


You can use the mozilla.cfg file in the Firefox program folder to set or lock preferences and run privileged JavaScript code.

A local-settings.js file needs to be placed in the "defaults/pref" folder where also the channel-prefs.js file is located to specify using mozilla.cfg.

pref("general.config.filename", "mozilla.cfg");
pref("general.config.obscure_value", 0);

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

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

The mozilla.cfg file needs to start with a comment line (//).

See Configuration:

See also: