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

update to 40.0.3 erased profile

  • 6 replies
  • 7 have this problem
  • 392 views
  • Last reply by FredMcD

more options

There is nothing left of my profile I had. No bookmarks, no history, none of my settings or addons. The icon was missing from my taskbar. So it looks like a complete wipe and install. Is there any way to recover the bookmarks?

Chosen solution

On rare occasions after an update Windows might start up in a different user profile folder. Have you tried shutting down and restarting Windows?

If your old profile folder was removed, and it's not in an Old Firefox Data folder on your desktop, you might need to use a lower level undelete tool like the following:

https://www.piriform.com/recuva

Read this answer in context 👍 2

All Replies (6)

more options
more options

No "old firefox" folder on desktop. Only one profile in %APPDATA%\Mozilla\Firefox\Profiles\ and it was created at 4:30 this afternoon when the computer did an automatic update while I was at work. I have searched all of C: drive and cannot find any other .json bookmark files.

more options

Chosen Solution

On rare occasions after an update Windows might start up in a different user profile folder. Have you tried shutting down and restarting Windows?

If your old profile folder was removed, and it's not in an Old Firefox Data folder on your desktop, you might need to use a lower level undelete tool like the following:

https://www.piriform.com/recuva

more options

Thanks the reboot worked. everything is back the way it was before. I have never encountered this weird behavior before where windows makes a phantom user ID until you reboot. I know I used the same user name I always use as it has a different password. Maybe I should switch to Linux.

more options

I have no idea what causes it, but I'm glad you didn't spend too many hours figuring it out.

Every OS has its quirks, and often it's best to stick with the ones whose quirks you already know how to work around. In my view, you'd be in for an adventure with either Linux or Windows 10. ;-)

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

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