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

Microsoft recently sent out an update that completely reset all my Firefox settings. How can i get that back? Lost passwords as well.

more options

All passwords are lost, I still don't know what all has been reset due to that update, about 2 weeks ago was downloaded.

All passwords are lost, I still don't know what all has been reset due to that update, about 2 weeks ago was downloaded.

Chosen solution

Thanks for the ideas, but time had expired and all data was lost.

Ler a resposta no contexto 👍 0

All Replies (4)

more options

Hi, in case a Firefox Refresh has occurred, please look on your Desktop for a file named Old Firefox Data - Refresh Firefox - reset add-ons and settings.

If the file isn't there, please see if you can recover your data from -

If your question is resolved by this or another answer, please take a minute to let us know. Thank you!

more options

A really major Windows update gives you the choice of keeping your data in place, backing up your data to a temporary folder, or removing all your data. To check on the backup possibility:

Look for a folder on your system named (use Windows Explorer for this, not Firefox):

C:\Windows.old

Can you find a folder with that name? If so, we need to act quickly, as it usually is deleted automatically after 4 weeks.

To explore in your old user folder, you need to turn on viewing of hidden files and folders: https://support.microsoft.com/en-us/help/14201/windows-show-hidden-files

Then look for

C:\Windows.old\Users\your-user-name\AppData\Roaming\Mozilla\Firefox\Profiles

If you find data there -- one or more semi-randomly-named folders -- there's a good chance of using that to restore your Firefox data.

More details if you found any folders... let us know.

more options

These can't get your data back, but will help in the future.

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

https://addons.mozilla.org/en-US/firefox/addon/febe/ FEBE (Firefox Environment Backup Extension)

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 backups of files that you choose.

https://addons.mozilla.org/en-US/firefox/addon/opie/ OPIE

Import/Export extension preferences


In the event that the passwords information is lost, you should record all information in a separate text file somewhere else on your hard drive, or written down. You can easily copy and paste if you need to do so. If you are concerned about someone else looking at that file, you can compress it using a password.

more options

Chosen Solution

Thanks for the ideas, but time had expired and all data was lost.