Diễn đàn hỗ trợ Firefox

I powered up my MacBook the other day, and Firefox updated. Then, suddenly, all my bookmarks and history were gone. I have tried the "about:Profiles" and nothing is there. I have read here that many with OS have encountered the same issue.

What is the fix?

This isn't exactly something that is broken but it is something that is plenty weird and I wondered if anyone has an idea how it happens.

I shut down my Linux laptop one day and when I started it the next day, all my tabs were gone. Annoying, but I spent some time searching for the most important ones and got on with my life.

We have a class picture book that is only accessible by faculty from campus or using the secure VPN. It helps us to learn people's names. It is an HTML file. One day, I needed to look someone up. Ordinarily that would open a new tab in the browser I have running, but it didn't. A whole new Firefox appeared for it and there were all my lost tabs.

Wut?

Now I can use the picture book to alternate between my old tabs and my new ones. How on Earth can this happen? It isn't exactly something that is broken, just something I don't understand.

Hey guys, My friend got on my pc and shut it off without me looking and somehow when i opened it back up all my tabs(couple hundred) distributed between 3 windows were lost. I've tried all the usual recovery options by doing previous or session restore, its not popping up in recently closed windows as well, where i usually recover my sessions from if it does go wrong. Is there any other way where this data may be stored, to recover a session from 31st Dec 2025.

Would greatly appreciate any help :D

all bookmarks are now missing. Firefox did an update recently when I restarted my desktop. I have gone through the forums and just checked the 'Places Database' when I pressed verify integrity I get the message:

Task: checkIntegrity - Unable to check places.sqlite integrity: Error: Error(s) encountered during statement execution: > Task: checkCoherence - The task queue was cleared by an error in another task. > Task: expire - The task queue was cleared by an error in another task. > Task: vacuum - The task queue was cleared by an error in another task. > Task: stats - The task queue was cleared by an error in another task. > Task: _refreshUI - The task queue was cleared by an error in another task

so now what should I do??

I have used firefox as my brouser on my PC for years with all my bookmarks and passwords. Now without my old computer, how do I restore all my account passwords and bookmarks as it was before.? I am using windows 11 on a Dell desktop PC. Please help. I am not a computer genius. Is there a phone number to call for live help.

All my data that I had in Firefox is gone. I have been using Firefox for 3 years now and had bookmarks and accounts set up. Today I opened firefox and logged in and they asked for recovery key out of nowhere now all my data is gone. If I dont get access to my bookmarks and saved accounts I will be switching to a different browser.

Dear Firefox Support Team,

My Mozilla Account was Accidentally Deleted Today and I'm Looking to Recover my Data (History / Passwords / etc.). Is There any Way to Do so?

Thanks in Advance

ALL

please help, i did the FF security update and lost everything! i have no passwords or bookmarks please send me a link or something to recover to last weeks version of FF this is driving me crazy.

Dear Support,

today i recognize that my bookmarks are gone and i cant find any backup data or something else. First of all i restart morzilla. Then i restart my windows 11. still gone so i load a windows backup from yesterday. nothing change so i reinstall Morzilla but its still gone.

Is there anything else i can do ?

My bookmarks are not working. Every time I try to click the star, nothing happens. I try to add bookmarks using ctrl d and nothing happens. This happened probably after an update from firefox (there is so many that I have to do constantly). I even tried restoring previous bookmarks, however it tells me unable to process the backup files. Ive even done "refresh firefox" "troubleshoot mode" and "clear startup cache" in the about:support area. Ive also reset my pc multiple times.

I would hate to have to use a different browser. PLEASE HELP FIX THIS

SUBJECT: Profile missing after update to 146.0.1 

After the last Firefox update (146.0.1), I can no longer access my profile that included bookmarks, history and passwords.  

After the update was done on 12/19/25, I was given the option to choose between my original profile and a newly created one. The next day when I opened Firefox, there was only one profile shown and my original profile was gone. I have read numerous fixes for this problem but nothing seems to work.

I have done the following to try to locate my missing profile to no avail. 1. I went to the Profile Manager but the only profile listed was the newly created one. 2. I didn't do a refresh so there was no "Old Firefox Data" folder to copy the data from. 3. Used about:Profiles, Again only the newly created profile was listed 4. I used ~Library/Application Support/Firefox/Profiles. Still no luck. 

Could my profile have been moved to another place or could it be hidden? Any help would be greatly appreciated!

I had bookmarks and backgrounds and everything saved on my browser. My mac book died and now when i open it everything reset. I didn't have any profiles or sync on but why did everything reset. And am i able to get what I had back.