Refresh Firefox - reset add-ons and settings

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  • Revision id: 38005
  • Created:
  • Creator: Tonnes
  • Comment: logged into -> logged in to
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: John99
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: John99
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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 is stored in your profile folder. The reset feature works by creating a new profile folder for you while saving your:

  • Bookmarks
  • Browsing history
  • Passwords
  • Cookies
  • Web form auto-fill information
Warning: When using the reset feature, the following items are either NOT SAVED or set to their defaults.

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. At the top of the Firefox window, click the Firefox button, go over to the Help sub-menu
    (on Windows XP, click the Help menu at the top of the Firefox window) and select Troubleshooting Information.
    Troubleshooting info - win
  2. Click the Reset Firefox button in the upper-right corner of the Troubleshooting Information page.
    Reset Firefox - Win - 1
  3. To continue, click Reset Firefox in the confirmation window that opens.
  4. Firefox will close and be reset. When it's done, a window will list the information that was imported. Click Finish and Firefox will open. That's it – you're done!
  1. On the menu bar, click the Help menu and select Troubleshooting Information.

    Troubleshooting info - mac
  2. Click the Reset Firefox button in the upper-right corner of the Troubleshooting Information page.
    Reset Firefox - Mac - 1
  3. To continue, click Reset Firefox in the confirmation sheet that slides down.
  4. Firefox will close and be reset. When it's done, a window will list the information that was imported. Click Done and Firefox will open. That's it – you're done!
  1. At the top of the Firefox window, click the Help menu and select Troubleshooting Information.
    Troubleshooting info - lin
  2. Click the Reset Firefox button in the upper-right corner of the Troubleshooting Information page.
    Reset Firefox - Lin - 1
  3. To continue, click Reset Firefox in the confirmation window that opens.
  4. Firefox will close and be reset. When it's done, a window will list the information that was imported. Click Finish and Firefox will open. That's it – you're done!