Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

System says cannot read configuration file and contact system administrator what do I do?

  • 2 replies
  • 1 has this problem
  • 10 views
  • Last reply by cor-el

more options

System says cannot read configuration file and contact system administrator what do I do?

All Replies (2)

more options

Did it give a name to that file?

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

more options

You get this warning if there is a local-settings.js or autoconfig.js file in the "defaults\pref" folder where the channel-prefs.js file is located that specifies to use mozilla.cfg.

See Configuration:


If there are .js files present in the "defaults\pref" folder apart from the channel-prefs.js file that sets app.update.channel then open this file in a plain texteditor like Notepad (Mac: TextEdit) and please post its content. Also please post the content of the mozilla.cfg file.

There shouldn't be a mozilla.cfg file present unless you've created it yourself to initialize some prefs.

If you have this mozilla.cfg file then best is to do a clean reinstall and delete the Firefox program folder to make sure that all files are removed before reinstalling a fresh copy of Firefox.