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How to reset Firefox to default settings

August 2015

How to reset Firefox to default settings

Firefox is not responding or is experiencing random crashes? You have tried to launch your browser without add-ons but the problem still remains?
Here's how to reset Firefox (tested on the latest version of Firefox- 33.1)
  • Click on the Menu button > Help.
  • Click on Restart with Add-ons Disabled
  • Click on Restart.
  • In the menu that opens, click on Reset Firefox.
  • Follow the onscreen procedure:

For the other versions of FIrefox:

Windows XP:

  • Click on Start > Run
  • Enter the following command: firefox -safe-mode

Windows 7 and Vista:

  • Click on Start and in the Search field enter the following command:
  • firefox.exe -safe-mode


  • Open Terminal and type:
  • /path/to/firefox/firefox -safe-mode

Mac OS:

  • Open a terminal and type the below command:
  • /Applications/ -safe-mode
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See also

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By pintuda on December 16, 2010
Original article published by Jeff. Translated by deri58. - Latest update by jak58
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