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

Hey, Thanks Man. You saved my life!!!!

Glad to help. Safe Surfing.

Back up and restore information in Firefox profiles {web link}
I use an add-on that makes backups of my user profile, Just In Case.
Unfortunately, it is not compatible with the current Firefox.

Every now and then, open the profile folder and create a copy of the current profile as is to another location on your hard drive. This way you will have a backup.

If you do this each day, you will not lose much data. This should be done with Firefox Closed.

Note: In case you need to restore from these backups, you may need to overwrite old or corrupted files.

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.

Hi there... Need Some Serious Help please

I somewhat have the same issue but with the last Firefox update is when i believe this started. I Changed my master password and Firefox is not recognizing it. I've restarted FF in safe mode and located the old files on Desktop but they are from 2018! I have a set of recovery keys but since the latest update Firefox shows that i haven't created a set yet and keeps asking for Master PW everywhere i go even in safe mode.. I've exhausted most option i have read except for the refresh... I'm concerned with trying that and it ask me for a master pw again. I can not afford to lose 3 yrs worth of passwords as i have started a business within those 3 yrs.. Can Someone please help me out... I would be very grateful!

Aaron

Biggs, Please go to the top of any support.mozilla.org web page and use the Get Community Support link: https://support.mozilla.org/en-US/questions/new

Select the product for what the problem is (Firefox or whatever). Now select the category for the problem. At the bottom is Other.

Describe the problem in brief (one line). Then press <enter>. The website will display any prior posts that might help you. If nothing on the list can help, at the bottom press the button; ’’'None Of These Solve My Problem.

Now enter all the relative information on the problem. At the bottom of this, you can Add Images.

Under this is Troubleshooting Information. Please press the Share Data button. This will let us look at your system details. No Personal Information Is Collected.

Hi I have found the Old Firefox data folder but have no idea how to reinstate my passwords or how to find them within the folder. I have looked, but it may as well be in Greek to me...sorry to anyone Greek out there. Can anyone explain...how to recover my passwords 'For Dummies'. Thanks Maggie Mae.