Diễn đàn hỗ trợ Firefox

Hello. As the subject suggests, all my tabs were closed on their own when I opened Firefox. Open last session tabs on startup setting is on. I had a few hundreds of tabs, 300+ or something (ik it's a lot). All gone... I had some important searches among them. Is there a way to get all my tabs back? Please help. Thank you.

When I open Firefox or after a reset of Firefox, my tabs do not restore, and I have to start from scratch. I updated all my settings, and restoration does not happen. Please help.

I recently sent my PC to the Geek Squad to fix my laptop. They downloaded the hard drive's contents onto a USB and did a full reset of the PC. I have it back now and the first thing I want to do is restore my tabs, history, bookmarks, etc. on Firefox. I tried following the Mozilla's recovery guide but it doesn't work. The only things I got back were my browser extensions. I'm not sure if I did it right. I'm kind of at a loss.

Dear Support,

I have been using Windows 10 with Firefox for many years without any problems. However, yesterday all my extensions suddenly disappeared, though the bookmarks toolbar remained intact.

To fix this, I restored my computer to an earlier state from a few days ago. Unfortunately, after the restoration, even the data on my bookmarks toolbar was completely gone.

Could you please advise what might have caused this issue and whether there is any way to recover my lost bookmarks and extensions?

Kind regards,

AylwinChun.

When I started Firefox today, there was a new tab with some information about something or other I have completely forgotten, as I soon discovered all of my bookmarks were gone, which is the only thing I can think about right now. I easily found advice about how to switch to another profile that might contain my missing bookmarks, but I have only one profile listed, the default one. I also easily found advice about how to go to the Library and import a backup. I can get as far as clicking "Choose File," but after I do that, absolutely nothing happens, no matter how long I wait.

Hi, Firefox updated my browser to version 142.0 on the 24 Aug 2025. After shutting down my PC and reopening the next day, all my opened tabs in the browser were removed and have dissapeared? I have checked the history folder, but only tabs from after the update are available. Where have they all gone and how do i recover them. Very frustrated !!!

Please help. After the recent 8.27.2025 Firefox Update my Bookmarks Sidebar and all Bookmarks have vanished and can not be found anywhere, even after several solutions were applied.

Hello, my pc recently crashed and burned and won’t boot up. In anticipation of building a new pc, I’d like to retrieve my passwords and bookmarks from the broken pc. I made the mistake of changing my Firefox password and saw at the moment I pressed reset it said I’d lose everything. Of course I found the password for Firefox after the fact smh, but I’m wondering if I can retrieve the info from the broken hard drive and transfer to the new one. Is this possible?

I was using Firefox and signed out of the Bitwarden add-on and something went horribly wrong and all my Firefox passwords and even my Edge passwords were suddenly gone -- add all of my Bookmarks for both browsers have disappeared too!

And I don't know how to recover them. HELP!

When I last updated Firefox, about 2-3 weeks ago, all of my bookmarks, and the bookmark tool bar, disappeared.

I've tried to recover them using the automated forum, but nothing works.

How do I both get the bookmarks tool bar to always be visible and, at least as important recover all of my bookmarks - the ones that were visible on the toolbar, and all the others?

Thanks - I hope.

Hi We switched to W11 today. My bookmarks have transferred to the new system but on my wife’s ‘side’ of the computer they have not. How do I get her bookmarks back please? We each have our own email address so we have two Accounts. Thank you.

Bookmarks always disappear whenever firefox decides to update. It's happened to me twice this month. Why does it HAVE to happen and where does the square bookmark icon go that was always in the upper right even after the bookmarks are found? So frustrating.