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Yesterday, possibly related to updating to version 148, my profile completely disappaered. My old profiles are not visible under about:profiles, but are present on disk. They can not be imported with firefox -P. How do I get my profile data back?

Where do I input my recovery Key to get my account back? I recently had to get a new mother board and hard drive on my laptop. In the process, it wiped out my Firefox. I have reinstalled Firefox and have my previous Recovery Key to get my bookmarks passwords but can not locate where to enter the recovery key to do this. All I can seem to find is how to create a recovery key, not where to enter an already existing recovery key. Please help.

I have been a user of Firefox for many, many years (it is my default browser) and as of today I am extremely upset with you. Once again I go to use my favorite browser and all my bookmarks have been removed. THIS IS THE SECOND TIME SINCE THE NEW YEAR 2026.

I spent a great deal of time putting the bookmarks together that hold all the links to clients and their respective sites, along with all the places I have applied to and was about to apply, and today, again, they have all disappeared.

So, give me a reason to keep using your browser? As of this point, I am going to move to another browser and begin setting up all the bookmarks that I remember ... thanks for what seems to have become a HUGE problem with Firefox and blowing away my bookmarks and making me reset everything.

I have used Firefox when everyone told me to move to another because I believed you were the best at protecting my browsing experience and you didn't disappoint. But these last two times you have removed so much of my time I am at a loss as to why I even bother with you now ... besides, you have removed my Dad's obituary link and I'm not sure I will ever trust you again.

A, once, true believer in your ability to protect me.

Hello

After updating firefox I got logged out of firefox, after logging back in no profile data is available. I lost all the saved passwords, setting, browsing history, all of it. I lost access to website's because of it. Tried copying data from 'profiles' folder but it does not work. Never had problem like this ever and I'm considering changing browser for good. It should have never happen, like wtf is this?!

My entire Firefox account has disappeared, bookmarks, passwords, email, history, everything. I shut down my Mac Airbook when I left town Tuesday, powered up when I got home today and when i clicked on my Firefox icon at the bottom of the page, a new, unrecognizable Firefox page appeared asking for a signon rather than my default page, my email. Can you help me recover everything? Lloyd

firefox removed my bookmarks and they had no right to do so. This upsets me big time, and like everything else they have no phone line to cll for support. firefox is a real pice of work.

My computer automatically restarted, and when I reopened Firefox it was updated and my account was logged out. Once I logged in, everything was gone -- bookmarks, history, extensions. The only thing not gone were my saved passwords (so I know I logged back into my same account). I swear I backed everything up after the last snafu, but now I can't find anything. How do I fix this? I had 4+ years of bookmarks saved, plus my article saver extension.

Updated and lost everything in my browser and now is complete crap, no bookmarks, and it install google as a search engine that doesn't work. Can you help me rollback to the version that worked just fine? Searched help and didn't find a way to resolve problem.

Thank You,

James Johnson

My Windows 11 computer crashed recently. Before restoring windows I was able to backup some data files. I thought that I had a Firefox backup, as I recorded a folder called “Old Firefox Data” It contained a Folder called “2eguguhi.default-release” of size 751 MB. It in turn contained 7,708 Files, & 2,269 Folders. When I re-started Firefox on my “fixed” Windows 11, It was a virgin with no History & no Bookmarks; my old configuration was lost. I tried to follow the advice Fro Mozilla Help But to no avail. It was not able to detect or recognise the Folder in “Old Firefox Data”

Am I Lost or can someone Help please.

Bill L.

My wife's old Windows 10 HP laptop quit working last week do to some Operating System failure while it was trying to do an update. It finally did a reboot and now it is useless, at least as it is! It will NOT complete the boot process after trying all of the options offered. All that I am able to is exit out of Windows to a "DOS prompt." I am able to get to the Mozilla Firefox folder and others contain within. The new Windows 11 laptop I bought her is working fine with a fresh Firefox browser installed about a week ago. What she wants is her web links, settings and saved passwords "copied" from the old laptop and installed on the new one! We have no idea how many there are to retrieve! I'm hoping that there might only be one folder that I can copy via "command line" prompt to a USB drive and move the file(s) to the new laptop the same way. Can anyone tell me what I need to know? Thanks in advance! Tim O.

Over the last 5 or 6 months, Firefox seems to have lost the capacity to remember my open tabs if my Mac is forced to restart. These open tabs are vital to my workflow. If this can't be solved, I shall have to migrate to another browser, which is something I do not wish to do.

My Firefox version is 147.0.4; my computer a Mac Studio 2025 M3 Ultra; my OS Tahoe 26.3.

Please advise.

I have upgraded my PC from Windows 10 to Windows 11 and my Firefox bookmarks have disappeared. I understand that Firefox keeps a copy of my bookmarks which appear each time I start Firefox, so how can I make them appear again automatically when I open Firefox?

Having seen 2 versions of Firefox on my computer,i tried to delete one version and unfortunately both have gone. is it possible to recover the old version with bookmarks and passwords?