Refresh Firefox - reset add-ons and settings

Revision Information
  • Revision id: 39261
  • Created:
  • Creator: David Tenser
  • Comment: Attempt at clarifying the distinction between what's kept and what's reset by labeling the two lists more clearly on their own lines. Feel free to discard if you don't think this is better. :)
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: Verdi
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: Verdi
Revision Source
Revision Content

Over time Firefox can develop problems like slowness, crashing, unwanted toolbars and more. Troubleshooting and fixing these issues can be difficult and time consuming. The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.

Note: This applies to the latest Firefox release version which can be downloaded from mozilla.org/firefox.

What does the reset feature do?

All of your Firefox settings and personal information are stored in your profile folder. The reset feature works by creating a new profile folder for you while saving your most important data.

Firefox will try to keep the following data:

  • Bookmarks
  • Browsing history
  • Passwords
  • Cookies
  • Web form auto-fill information

The following items and settings will be restored or removed:

Note: After the reset is finished, your old Firefox profile information will be placed on your desktop in a folder named "Old Firefox Data." If the reset didn't fix your problem you can restore some of the information not saved by copying files to the new profile that was created. See Copying files between profile folders for instructions. If you don't need this folder any longer, you should delete it as it contains sensitive information.

How do I reset Firefox to its default state?

  1. Click this Refresh Firefox button directly, if you are viewing this page in Firefox.
    This won't work if you are using a different browser or on a mobile device.
  2. To continue, click Refresh Firefox in the confirmation window that opens.
  3. Firefox will close to refresh itself. When finished, a window will list your imported information. Click Finish and Firefox will open.

Note: There's also a Refresh Firefox button in the Firefox Safe Mode window, if you can't start Firefox normally. You can also do a manual refresh by creating a new profile and transferring your important data to the new profile.