Firefox update deleted all of my profiles, history, bookmarks, and tabs

Today I was prompted to restart Firefox. When I did, I got a homepage that said "Congratulations on 150 versions of Firefox" or something like that. Then I shut my comp… (kàsi)

Today I was prompted to restart Firefox. When I did, I got a homepage that said "Congratulations on 150 versions of Firefox" or something like that. Then I shut my computer down. When I booted it back up, ALL of my profiles, bookmarks and web history are gone. I can't find anything on my desktop to "restore" my old settings. I'm prompted to "create new" profiles. WTF is going on?!?!

Open 2 19

I have not been able to retreive my desktop information and my bookmarks. Firefox was changed overnight.

bold textWhen I opened my computer this morning without warning the Firefox had a new default page and all my information was gone. I've tried deleting and redownloading… (kàsi)

bold textWhen I opened my computer this morning without warning the Firefox had a new default page and all my information was gone. I've tried deleting and redownloading and trying to follow the instructions on how to transfer the information, I could not get anything to work. I know I'm doing something wrong but have no ideas what I am suppose to do. Very disappointed I had some importat information on the desktop and would like to get it back.

Open 2

When accessing my bookmarks list, I clicked on the wrong location and my whole list of bookmarks disappeared; left me with tabulated folders. How do I get my list of bookmarks back?

When accessing my bookmarks list, I clicked on the wrong location and my whole list of bookmarks disappeared; left me with tabulated folders. How do I get my list of book… (kàsi)

When accessing my bookmarks list, I clicked on the wrong location and my whole list of bookmarks disappeared; left me with tabulated folders. How do I get my list of bookmarks back?

Open 9

Bookmarks disappeared after force quitting applications and restarting my computer

My Macbook wasn't responding, so I restarted it and force quit all applications. When I opened Firefox again, none of my bookmarks showed on my bookmarks bar. The bar its… (kàsi)

My Macbook wasn't responding, so I restarted it and force quit all applications. When I opened Firefox again, none of my bookmarks showed on my bookmarks bar. The bar itself is not hidden. I checked to make sure I have the same profile I always use open and I do. I also tried to go into Bookmarks, Manage Bookmarks, Import, but nothing is available to import.

Open 15

Firefox lost all data. no history is there. Many open tabs: lost :-(

Starting the Windows 11 laptop again. Then Firefox. Result: No sites are starting. All history lost, many tabs: lost. Great work!!! Last update was already shit (many exc… (kàsi)

Starting the Windows 11 laptop again. Then Firefox. Result: No sites are starting. All history lost, many tabs: lost. Great work!!! Last update was already shit (many exception rules have to be set manual again. I love such updates! Useless). And now that. I think I will switch now to chrome. Sorry. Such experience is enough. It is my time - I need a reliable browser, not where I have to spend time to get the things like they have been before

Open 26

Profile missing after update

My browser updated to 149.0.2 on Windows 11 early April 2026. I first noticed the browser asking me to select a profile when trying to open hyperlinks from emails, but s… (kàsi)

My browser updated to 149.0.2 on Windows 11 early April 2026. I first noticed the browser asking me to select a profile when trying to open hyperlinks from emails, but since I had not closed the browser since the update, I still had all of my information. When I went to restart, I was forced to make a new profile as no other ones were recognized. This also happened during an update at the end of 2025 and I was able to fix it with advise from support articles., Unfortunately, none of those fixes seem to be applicable anymore. Does anyone have a current fix? I have lost so much saved info!

Open 24