Diễn đàn hỗ trợ Firefox

I'm getting the following error message:

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 don't know what prompted this concern on my Windows 11-based laptop, but I only noticed this last night doing some research for another issue. I don't have any of my bookmarks showing up in the bookmarks section, nor will it allow me to click the star on any tab to bookmark the page. I have restarted and shut down my laptop several times and this is not solving the concern. Let me know if you need more information or if I need to start this inquiry again elsewhere, but again it sounds like the same concern.

I have included a screenshot of the exact error for accuracy's sake. Like everyone else here, I'm trying to get my bookmark and history access back up and running but not sure how to go about it.

I couldn't get past the first fix suggestion because I am not sure how to restart Firefox (https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional?as=u&utm_source=inproduct&redirectslug=The+bookmarks+and+history+system+will+not+be+functional&redirectlocale=en-US). I have restarted my laptop several times but the issue still persists.

Please advise.

Ironically, I am not having this issue on my older PC that is still operating on Windows 10. I can view history and access or add bookmarks with no concern to my knowledge.

Why have YOU removed my Bookmarks Sidebar??? I have collected many bookmarks, but NOW there is NOTHING in the sidebar!! This is a rubbish way to update users - STOP IT!! I want my book marks on MY sidebar ... stop thinking YOU KNOW BETTER!! GIVE ME BACK MY BOOK MARKS! WHERE *I* WANT THEM!!

Seriously this is SO RUBBISH I will dump Firefox ... after MANY MANY YEARS!!

icon is missing on 2 of my bookmark, tried every fix found on google and AI and nothing works ... you should add a simple fonction to choose an icon for the bookmarks ...

Not sure if this is the right area for the toolbar bookmark, but mine since the update now shows a black screen over the list. I have a mac ios system. Can you help me get it back to clear? thank you

hi in current version of ff on a win 10 pc.

i have somewhere a fold in ff called "cars"., can anyone tell me how to locATE IT

the advice i previously got no longer works THAanks

I HAVE TRIED TO FIND A STREAMLINED WAY TO DELETE MULTIPLE DUPLICATE BOOKMARKS (UNINTENTIONALLY CREATED BY AN OLDER FIREFOX BOOKMARKS IMPORT). BUT I HAVEN'T FOUND ANYTHING THAT WORKS. USING BOOKMARK MANAGER IS FAR TOO TEDIOUS AND TIME-CONSUMING. AND AN EXTENSION ADD-ON I TRIED CREATED EVEN MORE PROBLEMS. I NEED HELP!!

On my old computer, I used the toolbar to take me to my main programmes like Ebay, Facebook, my log-in page for my bank etc. Now there is no room because it is filled up with bookmark folders.

Bonjour Affichage des dossiers de mes signets ne s'affichent. Tout apparait mélangé, sans le nom des dossiers. Que puis-je faire? Merci pour votre aide Cordialement

How can I bring my bookmark toolbar back? It is on my Eset firefox page, but not on my firefox page. I'm running out of ways to get my bookmark pages back. Yes, I updated to Windows 11, now, I'm thinking that was a bad mistake. Help??? Thank you. Linda

From: cartwrm@talktalk.net <cartwrm@talktalk.net> Sent: Friday, July 18, 2025 2:14 PM To: no-reply@mozilla.org <no-reply@mozilla.org> Subject: Re: Bradforth posted an answer to your question "Ive lost mybookmarks on the left side of the screen"

It's really strange (I'm still trying to understand my relatively new Windows 11 laptop), bookmarks have been where I'd expect them for a few days, then this morning, it's as if Firefox has done some sort of clean/re-arrangement. The bookmarks had disappeared and there wasn't my usual array of sites available along the top. Then by clicking on a few things on the right (Firefox) 'most used' re-appeared, then later the toolbar is there on the right, I'd really like it back on the left And also I'd love to know whether I might have done something unconsciously which caused this.

Mike

After exporting bookmarks.html from Ffox on old computer, importing it to Ffox on the new one, all good, except that bookmarks toolbar shows on the imported list but doesn't display as toolbar.