I-Firefox Community Forum

Hello,

I'm writing because I’ve encountered an issue with the tab groups feature in Firefox.

Some time ago, after a browser update, I noticed a new feature that allowed me to group tabs thematically — I could name each group (e.g., "Study", "Work"), choose a color for it, and save and close groups to reopen them later. I found it very useful and used it a lot.

Last night, I decided to declutter my browser and closed several tab groups using the built-in menu. A bit later, I shut down my computer, but perhaps too quickly. This morning, when I turned my computer back on, Firefox was very slow to start. After a restart, everything seemed to work fine again, and the open tabs were restored.

However, all my previously saved (but temporarily closed) tab groups disappeared. In the tab group menu, I can now only see the ones currently open. I’ve searched through all the settings and history but cannot find any way to restore the missing groups.

Is there any way to recover the tab groups that I had previously saved and closed?

Thank you very much in advance!

Hi

I've just booted my machine and opened Firefox, only to be presented with a completely fresh install.

All my settings, bookmarks and history gone. It was fine yesterday when I closed it and powered down.

I'm running Kubuntu, I've checked the .mozilla folder and nothing...it's like my profile has just been overwritten.

Not happy at all, I'm starting to dislike Firefox.

Can anyone offer any help or advice please?

Thanks in advance.

Dear Mozilla Support,

My name is Sizhe Xiong. Today when I launched Firefox on my Windows computer, the browser suddenly required me to select or create a new profile before continuing. I had no option to skip this step, so I created a new one.

After that, Firefox asked me to log in or register a Mozilla account. I used the same Gmail address that I’ve always used for Firefox Sync, but it seems that a new account was automatically created, and all my previous data — including bookmarks, history, saved passwords, and extensions — disappeared.

When I checked my local Profiles folder under C:\Users\<username>\AppData\Roaming\Mozilla\Firefox\Profiles, I found several new folders created around the same time, but none of them contain my old data (all places.sqlite files are around 5120 KB).

These bookmarks and passwords are very important to me. Could you please help check if it’s possible to recover my old Firefox data, or if my previous Sync data can still be linked to my Mozilla account (using the same Gmail address)?

Thank you very much for your help.

Best regards, Sizhe Xiong

Where are my bookmarks? Everything is gone with the update, and you didn't warn this could happen. Is there a way to recover the bookmark file? Profiles does not help for there is no new profile there. I NEED THE BOOKMARKS FOR WORK!!!

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I have years of bookmarks that have disappeared and my history is missing. Firefox opens with the tabs that were open when it shut down. I really want my bookmarks back.

Firefox just updated and ALL of my bookmarks are gone. There is NOTHING. WTF? I am not a computer person so reading help articles just makes my head spin and of course I can't reach a real live person at Mozillabold text. Can anyone help?

144.0.2 firefox version has an issue with bookmarks keep, they keep dissapearing & i have to use firefox fix from uninstall option to restore. unable to use email links as it requests that i close firefox window before it can open links, when i do this all bookmarks are gone & i then have to start again. I'm running win11 25h2 with all updates done both chrome & edge are not causing issues

Today I opened Mozilla at my laptop. It malfunctioned (videos froze, pages did not fully download), so I closed the window and after a couple of seconds I reopened it. My previous session was gone. I read your articles regarding this issue, did what was described there, but nothing has changes. I lost everything! Job videos, hobby pages - everything! A couple of pages can be restored via history, but that's it! I didn't do anything special before closing the window!

Yesterday I got a prompt saying there was an update available for download. Today when restarting my laptop and opening Firefox ALL of my bookmarks are missing!!! My bookmark toolbar is also empty. Where did all of this important stuff go? Please help me restore this my information asap. I am freaking out!

When I opened Firefox today, all my bookmarks are gone and a message about a Firefox is opened by another application is showing. None of your online suggestions helped. Is there a hidden way to restore Firefox to another version?

I quit Firefox and when I restarted it it said it was a new version! It said something about restoring but I assumed it was just restoring my prior pages! DAMN! I can't even find a place to import bookmarks!

I am so angry I could chew nails!

iMac 2013 Catalina 10.16.7

I was on a website and noticed I was signed out, so I went to log in, but the browser did not display the username/password like it usually does. I clicked on the hamburger menu to go to my passwords and I noticed that it said "Account disconnected" at the top. I figured this was the issue, so I clicked it to log in. After going through the forgot password steps, I got logged in to Mozilla. Firefox then prompted me if I wanted to save that password and I clicked yes. I then went to the password manager and the only one listed was the Mozilla password that I just saved. After some digging, I found there was a logins.json.corrupt file in the profile folder. I tried renaming it to logins.json but that does not work. I tried viewing the corrupt file, but it was not legible.

Is there any way to recover the passwords or are they gone for good?