Diễn đàn hỗ trợ Firefox

I've lost my bookmarks after Firefox restarted after computer crash today. The bookmarks library is empty, and I could not find another profile. I could not find "Old Firefox Date" on my desktop.

I'm on a Macbook Air, Apple M2, Sequoia 15.3.1

In Firefox (up to date yes) when I embed a YT video to the forums I use, it comes up with an YouTube Configuration Error 153.

How do I fis this? YT embedded on Chrome & Brave etc play perfectly, but Mozilla always sends me to YouTube itself.

Po aktualizacji Firefoxa do wersji 147.0.3 (64 bity) nie mam dostępu do haseł zapisanych przez lata. To już drugi taki przypadek, a pierwszy naprawił się po nowej aktualizacji. To cyfrowa inteligencja rządzi Firefoxem?

"I’ve been having trouble with choppy YouTube videos in Firefox. It happens on both Wi-Fi and Ethernet connections. My system is running Windows 10, and I’ve already tried disabling hardware acceleration and clearing my browser cache. The issue persists even when I’m in Safe Mode. I’m using the latest version of Firefox (XX.XX). Any suggestions on how to fix this?"

This morning this was at the top of my screen when I logged into my computer. "For quick access, place your bookmarks here on the bookmarks toolbar. Manage bookmarks..."

I did click on it however nothing happened or so I thought. I later go to the upper right hamburger and click on it and go to the bookmark tab only to find all my bookmarks are gone.

Can anyone tell me how to get them back since that is my quick access to my business sites? Is there a way to find them or are they just gone?

I cannot get the tab to stay out so I can take a screen shot. Sorry.

Any help will be greatly appreciated. Thank you.

I am running a desktop with Win 11 pro with all the updates. I have Firefox as my web browser and Thunderbird for my email accounts, Talktalk, Aol and gmail. When I try to open a web page with a mailto link, although Firefox is set as default it will not open the link, oddly it will work with gmail. I do not have this problem with my other desktop running Win 7. How do I get it to work on Win 11. Please note I am a 80 year old and totally illiterate computerwise. Therefore I need the answer to be step by step and when you say open this or that please tell me how to open it. Geoff

I'm having trouble with the ui elements on firefox, the min/max/close buttons are showing some random characters and the menu also shows an "Á" besides some options.

Here's what I tried: reinstalling, clean reinstall, delete start cache, fresh restart, troubleshoot mode, On windows: restore font configuration, sfc /scannow, dism cleanup-image restorehealth, deleting all aditional installed fonts and saving only system included fonts.

Still, the font on tabs and some menus looks strange, and the problem with buttons and menus keeps happening.

I don't really know what else to do

Whenever I try to full screen a Youtube video a large solid white bar will appear on the bottom of my screen. It doesn't block the actual video or even the controls but it seems to push the entire video upwards. It only does this on firefox and only on youtube. It seems to be a solid empty space as I can't click on it and right clicking just gives me video playing options. I've tried restarting my computer and firefox a few times and that didn't work. It does however change size and with the browser zoom and color mode respectively. please help.

Over the last couple of months, Firefox has automatically added Favorites to my home screen. If I delete one of these another replaces it.

Where do I go to stop this?

I get all other websites and I used to access couchmanagers.com on Firefox. But recently on about 90% of the clicks to this site I do NOT receive the "Current Auction" and "Chat" pages. What can I do to resolve this issue other than use another Browser. This site works fine on my Fire Tablet and everyone else computers and tablets.

Hello all,

I recently (2 days ago) discovered that my Firefox was broken immediately following a Windows 11 update (2026-01 Preview Update (KB5074105) (26200.7705), in case this means anything to anyone). I first noticed my bookmarks and browsing history were gone (which I noticed a lot of people have already been complaining about recently). I want to start off by EXPLICITLY saying I have tried restarting Firefox, my computer, and following the instructions from the most commonly linked solutions (1 1, 2 2 , 3 3). None of it has many any difference to speak of. Now, onto the diagnosis.

My history is still not being remember or updated. Furthermore, the history management tool (the one that opens up on Ctrl + Shift + O) is completely non-functional. Clicking any button in there does nothing. I have tried to go "Import and Backup -> Restore -> Choose a File", especially because I managed to locate the .jsonlz4 backup files for my bookmarks in the root folder of my (one and only) profile. The history manager does not allow me to open a file, in fact clicking "Choose a File" does not even open a file selection menu. Clicking "Backup" does nothing, clicking "Import Bookmarks from HTML" does nothing. "Views" is also completely empty (which I assume makes sense, given there is no browsing history to speak of).

My only guess is my profile ended up broken somehow? I would guess the Windows update had something to do with it, but the fact that the history is still not being saved 2 days later confuses me greatly. Any help would be much appreciated, thank you in advance.

Good Afternoon,

I am enjoying the easier profile management with the new profile system, and I am using it currently for splitting personal / work usage. I was just wondering if it is possible to set 'Choose a profile when Firefox opens' to always apply when running a Firefox shortcut, not just when Firefox is not currently running (similar to Chrome's 'New Window' option)?

Thanks, Robert

FF does not block pop ups when box checked.

Firefox Permissions yesterday blocked Pop Up for viewing my online documents with message "Permission to access file denied" .

I was able to view my online documents after Adding the merchants website to Firefox Permission Exception for Pop Ups, clicked "Allow" and Clicked "Save Changes".   

Next day, the Merchants website no longer appear in Permission Pop Up Exceptions Window, its now empty.

And now I am no longer able to block viewing my online documents as Pop Ups - my online documents are no longer Blocked when I click the "View" button -even though Permission Block Pop Ups box is checked and no websites appear in Permission block Pop Ups Exception Window.

I have tried a few suggestions from Reddit which did not solve the issue.

Please help.

Please view screen captures that best show the random issues I have with Firefox browser. This started a few months ago on my desk top PC. I have kept my Firefox up to date using 147.0.1. and still run WIN 10 Home. Although I am sure Linux is in my future!

The issue happens randomly where the top row of my browser disappears off my screen. I can work around the issue no problem but would like to know and understand the issue and if I can resolve it from happening. Firefox is the only app I have this issue with. And it is random and cannot be forced, I have tried....

Thank you for help. John Montani