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.

Avatar for Username

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

Este fío arquivouse. Faga unha nova pregunta se precisa axuda.

I accidentally reset Firefox back to default, can my mistake be undone?

  • 2 respostas
  • 1 has this problem
  • 9 views
  • Last reply by FredMcD

wolfinator
wolfinator
more options

I was troubleshooting on how to fix a problem with Firefox running extremely slow and somehow accidentally clicked on the Reset Firefox to its default state button. I lost all my saved passwords, user ID's, addon extensions, etc. Can this be undone? I've even tried to reset my computer back prior to a date with no luck. I have Firefox version 32 and run Windows 7 professional.

I was troubleshooting on how to fix a problem with Firefox running extremely slow and somehow accidentally clicked on the Reset Firefox to its default state button. I lost all my saved passwords, user ID's, addon extensions, etc. Can this be undone? I've even tried to reset my computer back prior to a date with no luck. I have Firefox version 32 and run Windows 7 professional.

All Replies (2)

patrickmc
patrickmc
more options

Hello wolfinator,

Thank you for contacting Mozilla Support.

When you reset Firefox your old Firefox profile information will be placed on your desktop in a folder named "Old Firefox Data". Refresh Firefox - reset add-ons and settings

You can copy the file you want to restore to your new profile folder. Look at this for info on how to do.

Recovering important data from an old profile

Please let us know if this solves your issue.

Cheers, Patrick

FredMcD
FredMcD
more options

These add-ons can be a great help by backing up and restoring Firefox

FEBE (Firefox Environment Backup Extension) {web link} FEBE allows you to quickly and easily backup your Firefox extensions, history, passwords, and more. In fact, it goes beyond just backing up -- It will actually rebuild your saved files individually into installable .xpi files. It will also make backup of files that you choose.

OPIE {web link} Import/Export extension preferences