This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

firefox completely resetting without any confirmations or anything at bootup

  • 1 reply
  • 1 has this problem
  • 7 views
  • Last reply by FredMcD

more options

as i started up my computer firefox started up some windows for half a second (could not see what they was, didnt click anything) i come back to firefox having started a window with Success!

Firefox is ready to go.

Your add-ons and customisations have been removed and your browser settings have been restored to their defaults. If this didn't fix your issue, learn more about what you can do. Restore all windows & tabs Restore only the ones you want

It did this all by itself without me asking it or clicking anything

as i started up my computer firefox started up some windows for half a second (could not see what they was, didnt click anything) i come back to firefox having started a window with Success! Firefox is ready to go. Your add-ons and customisations have been removed and your browser settings have been restored to their defaults. If this didn't fix your issue, learn more about what you can do. Restore all windows & tabs Restore only the ones you want It did this all by itself without me asking it or clicking anything

All Replies (1)

more options

Look on your desktop. Do you see a folder called; Old Firefox? Look inside. Look for the folder with the latest creation date.

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible