Firefox Community Forum

I have been using a usrChrome.css in my profile to create multi-row tabs. (Why cant Mozilla see the need for this with 4K monitors?) The Oct update broke this and I cannot get FF to load the css file that has worked for more than a ywar.

Help please?

Hey there! System: Windows 10 x64, Firefox Nightly.

Problem: Out of the blue, when I start Firefox Nightly (I think 2-3 days ago), it just crashed with no extra info. I see the "window of the update process", it goes to the middle or to the end, immediately closes and doesn't bring up the Crash reporter. However! When I tried to run a Nightly Installer that I downloaded through Chrome, it quietly runs and then just opens up my browser no problem, profile and all. I checked and it seems to be the exact same .exe file (according to the Task Manager).

So in short: it breaks if I run it straight from my usual shortcut, or with .exe. But if I run the installer myself, the browser opens up fine.

However, the installer didn't bring any new updates that would fix the problem, I have this for 2-3 days now, I don't remember. I start working, I see I didn't fix it and run the installer again.

Any ideas on the fix? I would love to not lose my profile, settings and, if possible, tabs. I'll try disabling all the extensions after I post this, I don't think they contribute, though (seeing how the external Firefox Nightly Installer opens up my browser just fine).

Thanks in advance!

Everything was normal before the update. When I did the update, the menus changed, the bookmarks disappeared, the new tab key disappeared, how do I get it back to its original state?

I have a Lenovo Chromebook and Firefox will not download, I have tried doing this from the Play store and even though I click to "download to this device" it keeps downloading the mobile app, I really need the full app please.

Hey, since yesterday ( 6/10/2024 ) my installation ( currently version 131.0 ) had a weird change. When opening the app it would create a new instance on my taskbar, while I thought unusual at the time it did also remove its ability to use the taskbar context menu, only having the pin to taskbar option.

Below are some images of this, the first two being the missing context menu from both Firefox installations, the original one is the one that has the frequents tab.

make firefox so it can sync the toolbars across networked computers. why does this not work. sync seems useless.

there is not button on taskbar to implement dark mode, but it is on several other firefox computers.

but it will not sync to toolbar for use, so dark mode cannot be clicked. pretty useless.

Firefox 64-bit installed to a completely new installation, but did not update my existing 32-bit version.

How can this update to the 64-bit version be done and still retain all of the tabs, favorites and saved data already in the 32-bit version?

Please advise. Thank you.

I was playing video on my website and using threejs to render the video over web. It was working on every browser until i opened firefox. On firefox the video is not playing or stuttering at multiple positions and i dont knew why.

I read somewhere on reddit post of how to fix it and got to a solid solution of turning media.wmf.dxva.d3d11.enabled false. media.wmf.dxva.d3d11.enabled When i turn this false, in the config of Firefox. The video stuttering is fixed.

But as am a developer and want a solid solution so that no user can face this issue on my website while video is played. So is there any solid fix other than this through code only so that i don't have to ensure for every user to make this thing false. Can i do this through code? Is there any fix to this issue.

Thankyou in advance.

When trying to use Firefox on WSL I'm getting multiple issues. There is no option to minimize or fulscreen, I can't click on Menus that pop up, like when installing Addons or when clicking the Hamburger icon in the top right and the scrolling is choppy and jumping around. I have tried multiple Versions of Firefox (Standard, Nightly, ESR) and even tried it on debain (I was originally on ubuntu). Has anyone esle encountered similar issues? Chrome works perfectly fine, and Firefox on windows as well. Thanks for any help or tips!

Firefox appears as a different application on the Taskbar with some default icon (not the Firefox icon). This happens regardless it is started from the Start Menu or from the pinned Taskbar icon.

This behavior appeared recently, I used Firefox for years on this PC without this issue. I guess it is caused by an update (Windows or Firefox).

OS: Windows 11 Pro 23H2 22631.4169 Firefox: 131.0 (64-bit) Microsoft Store version

i have m2 mac book air with 15.1 Beta (24B5035e) OS when i try to download firefox for my laptop it always defaults to 64-bit version not arm64 version due to this i am facing multiple performance issues. I searched online but it seems that no one has my problem. I like to use firefox but i am not able to.

I keep getting a message on facebook stating my browser(Firefox) is no longer supported even though it is updated to newest version....i have cleared cache and cookies and I still get the same message on facebook. (See attachment screenshot).

Important update! On March 14, 2025, a critical root certificate in Firefox will expire. If you’re still using an older version (before Firefox 128 or ESR 115.13+), it’s crucial to update to Firefox 128 or newer to avoid issues with add-ons, DRM-protected content, and other features.

For full details, check out Update Firefox to prevent add-ons issues from root certificate expiration.

If you have questions about the update or need help with the process, this is the place to ask! Whether you’re just starting or you’ve already updated and want to share your experience, we’d love to hear from you.

Let’s come together, share tips, and ensure we’re all prepared. Drop your questions or insights below!

i have a new Lenovo Yoga laptop. Previous laptop was a Yoga laptop. I could log in to Spotify with the previous laptop. I still can. I can't log in to Spotify on new laptop. I am being forced to log in with Microsoft Edge, which I hate! I read that I may need a Firefox add-on. What add-on? Help.

Last February, I installed an update that wasn't compatible with my macOS 10.13.6 High Sierra. As a result, my bookmarks disappeared. For a long time, I've been getting popups on a daily basis, and sometimes twice daily, telling me to update again. Based on my last experience, I not about to install any more updates. I want these messages to stop.