Firefox 社群討論區

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 !!!

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?

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.

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 used to open the small puzzle shaped icon I could see my visual book marks. I have been collecting work related images here for year. Now all I see is a request to personalize my extendtions with a ton of questions and an option to add AI. Where are my book marked images??? How do I retrieve that data?????

I have lost my History and Bookmarks. A message appears 'The bookmarks and History system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem' I use Asast One and Malwarebytes. Can you help please? I am not very technical so if you can put an answer in very basic terms that would be appreciated. Thank you. Arthur Moody

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.

I have saved more than 100 password of my firefox account, but after the app reset due to technical glitch in my device, I have been trying to recover the passwords but unable to find them what should I do?? PLEASE HELP IT IS URGENT