Diễn đàn hỗ trợ Firefox

I had a power outage occur recently and when i booted my computer again I found that somehow my Firefox account was disconnected. All of my bookmarks and history gone, but things like accounts and site preferences were kept. The problem is that firefox is not saving my history and bookmarks cannot be made. I have checked common causes for this problems, like not activating sync and turning off "remember history", settings which were set up correctly.

I've been a loyal Firefox user since version 2.0. but to this day you guys have not made it easier for users to restore Firefox profiles. We in 2026 should be able to do the following directly from the user interface of Firefox. honestly its really taken me a long time to voice this opinion but it makes the app a tad less user friendly. i mean its easier to import from another browser but you have to pull out and search all sorts of folders to import from an old Firefox installation or a windows refresh (windows.old). Please, please implement this ASAP. we users have waited too long.

1. display a list of profiles (even from windows.old after a windows refresh) 2. automatically import that information 3. append existing bookmarks from the bookmarks backup if i choose to. 4. be able to browse the bookmarks and show the most recently used ones 5. be able to even reinstall the existing plugins (this one is minor)

the image attached is exactly showing what happens after a windows refresh. this feature is also great for administrators.

Regards, Shomari Ryan

Dear Mozilla // Firefox persons - you really know how to shoot yourself in the foot.... I am fed up having lost all bookmarks and not able to initiate anew despite intolerable checks for updates, restarts & reinstalls. Really pissed me off. Your "help" pages are grossly overpopulated with waffle and dead end links.

The entire browser was acting extremely slowly, on every website, every start up. It crashed constantly to the point it was unusuable, it was even affecting the performance of the rest of my pc so I reset it and everything I had on the browser disappeared. Bookmarks, passwords, etc. I've tried going through the profile support pages but only the profile made from the reset exists. I had years worth of important bookmarks and passwords that'd I'd like to be able to get back if that's at all possible. (I'll live without them, it'll just suck trying to remember them all again) PC is Acer Aspire 3 Spin 14, Windows 10

How can I prevent firefox from DELETING all my bookmarks EVER AGAIN! FUCK!!!!! They did some kind of screwy update and reverted my bookmarks back by 6 months and I can't get them back. And yes, I saw all the backups they "stored" but they are not in there.

Today, when opening Firefox, it ran an update (to Ver. 151.0.2) and crashed. It attempted to restart, but instead ended up creating an "Old Firefox Data" folder on my desktop. How can I easily reinstall my previous setup from this data?

Hi, I realized the other day when I went to use firefox that my bookmarks and history were all missing from firefox. I first tried to see if it was a profile issue like listed here: https://support.mozilla.org/en-US/kb/recover-lost-or-missing-bookmarks but even though it had another profile my history and bookmarks weren't in the other other profile either. Next I tried the next method on the page where it says you can go to manage bookmarks then once in your library you can click restore to fix it but it refuses to bring up any files or folders when I do this. Also the library is totally empty and there's none of the previous shortcuts that show up from your most common pages when you open the new tabs, but when I opened firefox the first time it had the tabs I was previously on when I opened it like the previous session. My computer is very old and sometimes doesn't like to open new applications but a web browser or folder is basic enough that I've never really had issues with it other than slowness.

I apologize for the stupid question and greatly appreciate your patience. Thank you very much for any help in advance.

Before reinstalling Windows, I made a backup, but since I didn't update the system until a day later due to work, I forgot the backup password. I've tried every password I could think of, and I don't know what to do now.

Noticed the issue yesterday (5/21/2026) . My tabs were not what I had when I closed it the night before but from several hours earlier .

I googled for some help and was told to go , Help>More troubleshooting information> Profile Folder>sessionstore-backups and look for the backup I want , and rename as sessionstore.jsonlz4 (deleting the old one) . That did not work so as a temp fix I am using the session manager extension. 

How to fix this ?

Firefox crashed and now my shortcuts have gone and the bookmarks are not easily accessible. I tried importing from the desktop but they are now in a long list and not as they were (in the toolbar. I can't gt the "bookmark summary" showing in the toolbar area.