Firefox Community Forum

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?!?!

I have enabled the option to open the previous windows and tabs. I had one window that I always closed last as it had a lot of groups that are important for my work, so it used to open every time I started Firefox. Sometimes, even if I closed the window by mistake without closing other windows, I was able to get it back by pressing ctrl+shift+n.

But yesterday, I might have closed it by mistake and when I pressed ctrl+shift+n , it didn't come back. I wasn't able to access my window and now it's all gone. I don't see anything in recently closed windows in history.

I need those tabs back as they are very important for my work. they were a lot of tabs. I had many groups but now all are gone. I tried by using the previous.jsonlz4 in the sessionstore-backup by renaming it in the default-release profile as sesstionstore.jsonlz4 but still wasn't able to access my window.

I didn't clear my history as the tabs opened in the window still show up in the history.

Kindly help as soon as possible

with this new version i lost everything i need to get back to an older version and get all my extentions my bookmarks back all my s desktop items that i had linked to firefox are gone i can no longer get face book or anything back to firefox book marks every thing i had with firefox

and

The last time Firefox updated I lost all my bookmarks. Tried using the restore tool and it didn't work. Tried restoring from my USB drive, didn't work either. Can you PLEASE help??

I find recovering deleted bookmarks difficult in Firefox. Typically, I am told: "on August 12 you deleted 12,540 bookmarks. Do you want to recover them all and over-write your existing bookmarks?" To which the answer is obviously, no.

What I want is a system much more similar to the Microsoft File Explorer Recycle Bin, which lists deleted files on an individual basis, so if I have deleted a file, I can see its name, the date it was deleted, and where it came from, and I can restore that particular file. Or, since we are talking bookmarks here, recover a particular bookmark.

How can I achieve that? Is it possible?

I updated Firefox to 145.0 this morning, and after Firefox had restarted, it had lost all bookmarks and the bookmarks toolbar. I have spent all day following links to correct the problem and got nowhere. I have restarted Windows and Firefox countless times - no change. I've even tried reinstalling Firefox over the existing version. If I go to bookmarks > manage bookmarks > restore and backup, sometimes that will load, others not. When it does load, it fails to find a file to restore from. 10 years of bookmarks, links & research vanished.

Can someone please provide a solution (preferably in Layman's terms) to this??

Whenever my laptop starts up,firefox with all of my tabs always starts up with it. When i rose up earlier in the day and started up my laptop firefox with all my tabs opened up as normal,but this evening everything is gone. I had at least 20 tabs open and they were all important. There was no option to recover the tabs and this isn't the first time this has happened,this is at least the third time that this has happened after the last year and a bit. This is incredibly annoying and frustrating. Is there even any point in asking the community how this can be resolved?

This has happened several times in the last 4 months or so, it had never happened prior to that and I've used Firefox for years. It now occurs when I open Firefox after my computer has either been shutdown, or the computer does a restart. I am signed in to my Mozilla account.

CCleaner wiped out my bookmarks and their functionality. I have repaired, then uninstalled CCleaner. I have refreshed, uninstalled then reinstalled Firefox. I have logged in and out of Firefox. I have made an HTML file of bookmarks from another device in order to try to import them. Firefox bookmarks will not proceed to an upload stage. I went into setting to add the HTML of bookmarks and it said "this is not a bookmarks file." Well, Firefox made that HTML bookmarks file so I have no idea how that could be. Nothing I have tried has worked.

I use the Selenium IDE plugin for my job about 1 year. But yesterday I encountered a problem. I saved the project I was working on and left work on Friday(10.10.2025). And for a year, I kept saving it to my desktop. Yesterday(13.10.2025) morning I restarted my computer because it was running very slow. When I turned on the computer, I saw that the Selenium IDE project file I was working on was missing. I say "lost" because when I had it checked by the system team at the company I work for, it didn't appear to have been deleted. Also, I don't have any files with the ".side" extension in the recycle bin. I tried to find it with programs like Recuva and Everything, but it is not found. This is a very important file for me and my work. Can you help me please?

File name: MevaTest.side Selenium Ide extension version: 3.17.4