Firefox Community Forum

The mute icon only shows on hover and takes up 50% of the tab size so I'm constantly accidentally muting tabs without realizing it and silencing video calls and the like. The top Google result for this issue -- rightfully yelled in all caps because this is an absolutely horrid UX -- says to set browser.tabs.showAudioPlayingIcon to false, but that does absolutely nothing in FF 100.0

Sync is a nightmare. It is so unintuitive! What exactly would be wrong with having separate Export and Import buttons for each of Settings, Addons, Tabs, History, Bookmarks, etc? I have a desktop box and a newer laptop I wanted to get up to date. I pressed the Sync button on the desktop ... By the way, there`s a link below that reads "Connect another device" ... Connect where? Someone is designing these interfaces who has absolutely zero imagination. Anyways, I signed off, moved the ethernet cable to my laptop, signed in, pressed Sync, and voila!, I got my Bookmarks, at least. But I have no idea how to get my tabs and windows. I tried with a "download link" something or other, but it seemed to assume I was sync-ing to a phone, and didn`t work. Any way to get my tabs?

Firefox just turns into a black screen and becomes unusable. It has been happening for a long time now and i have checked RAM and CPU usage and they are all fine, as I explored potential causes.

I will be using firefox and it just turns all black on all screens and is completely unusable. To use it again I have to force close all windows and reopen it and it works again.

This is a frequent issue that I have seen

When I'm in full screen mode, The Apple, "Firefox" "File" "Edit" "View" "History" "Bookmarks" "Tools" etc menu bar shows up at the top and won't disappear. On my iMac Pro, it doesn't show up. i.e. Off.

I can't figure out what is the setting to make sure it does not appear. I went digging everywhere and can't figure it out. If you could tell me what config, etc I'm missing I'd appreciate it.

Screen shot attached to show which menu bar I mean.

My firefox is up to date: 126.0 (64-bit)

Hi all, I have a docker container which is running Ubuntu 20.04 and the lightweight desktop GUI. I need Firefox up and running in order to access the application for which was the intended use of this container. However the lightweight desktop apparently doesn't have some of the services running like systemd and snap. There is a binary named "Firefox" already installed at /usr/bin/firefox but I've tried "systemctl start firefox" but that didn't work. Any ideas on how to get Firefox up and running? Thanks Norm

Hello,

I experience constant tab crashes a couple of days now. I tried safe-mode and re-installing the browser. But the crashes still persists. This only happens with firefox.

Been trying to identify the problem. Here are some crash reports. All of them have the signature (unloaded T_Prevent64.dll)

Submitted Crash Reports Report ID Date Submitted bp-53c88a80-cb16-40d1-947d-197540240726 7/27/2024, 12:41 AM View bp-9c66625e-4a15-4d98-91c4-9ad8d0240726 7/27/2024, 12:41 AM View bp-e47e93d4-24f7-4ef7-9ee5-338e60240726 7/27/2024, 12:30 AM View bp-13afc8a2-be56-47ac-9ac7-76a090240726 7/27/2024, 12:30 AM View bp-9815e4b1-8134-4743-9dd9-8b2090240726 7/27/2024, 12:30 AM View bp-6097b5c4-fc4f-484f-856e-4af2b0240726 7/27/2024, 12:30 AM View bp-a7f77e4d-a97b-40ea-8234-c663c0240726 7/27/2024, 12:30 AM View bp-bfbf3809-eb66-4b19-a974-5afdc0240726 7/27/2024, 12:30 AM View bp-00f1270c-905b-4dba-852d-f435d0240726 7/27/2024, 12:30 AM View bp-046a789e-ed76-4800-8191-7caff0240726 7/27/2024, 12:30 AM View bp-d1b42aac-50f7-4605-8529-7b54b0240726 7/27/2024, 12:30 AM View bp-0f235aff-8ab6-4452-860d-051890240726 7/27/2024, 12:30 AM View bp-4aa4474f-594e-442f-b128-a90150240726 7/27/2024, 12:30 AM View bp-3cff0004-374e-42d1-b218-4955c0240726 7/27/2024, 12:30 AM View bp-59fbf0b7-6233-4f17-9e8e-bac590240726 7/27/2024, 12:30 AM View bp-ad0de436-d27c-467f-ba67-dc1920240726 7/27/2024, 12:30 AM View bp-563f7fe1-fd7a-4421-8a43-c52dd0240726 7/27/2024, 12:30 AM View bp-db02aaa2-aa75-473e-9e35-fd9fd0240726 7/27/2024, 12:30 AM View bp-e592c09f-7e55-4218-9b15-233a70240726 7/27/2024, 12:30 AM View bp-ffd6a3c8-d728-4582-9757-9cecd0240726 7/27/2024, 12:30 AM View bp-6c29b49f-f322-4370-aad9-1b2ab0240726 7/27/2024, 12:30 AM View bp-aa98e6dd-bc36-4483-bdd9-b055d0240726 7/27/2024, 12:30 AM View bp-0ca93951-168d-456d-ab9e-8b7ea0240726 7/27/2024, 12:30 AM View bp-59503df9-c479-477f-b5e9-711560240726 7/27/2024, 12:30 AM View bp-c1fe89fd-3453-494a-9393-fb9ca0240726 7/27/2024, 12:30 AM View bp-823c313d-b61c-4765-ae03-26b990240726 7/27/2024, 12:30 AM View bp-d98a0d3e-9771-420e-8926-bebfa0240726 7/27/2024, 12:30 AM View bp-28344e31-eec2-457e-bdfa-dec460240726 7/27/2024, 12:30 AM View bp-0ec8d55c-f85b-4285-857c-346980240726 7/27/2024, 12:30 AM View bp-e065338b-1c98-45ab-86e1-8bbd00240726 7/27/2024, 12:30 AM View bp-4e5ba615-3909-43e0-a753-1b5520240726 7/27/2024, 12:30 AM View bp-a3c4b47b-0c18-4b57-8891-d87740240726 7/27/2024, 12:30 AM View bp-d2cd41a4-0d99-48fb-9c03-eef450240726 7/27/2024, 12:30 AM View bp-678cde97-5d99-46e7-85cd-4a1470240726 7/27/2024, 12:30 AM View bp-aa7cfca5-3347-4da6-8bfd-eb25e0240726 7/27/2024, 12:30 AM View bp-d583ec50-2340-4d00-b2c8-9893a0240726 7/27/2024, 12:30 AM View bp-0ab52e60-ece8-4813-a88c-996140240726 7/27/2024, 12:30 AM View bp-6218d412-d4f5-4029-a576-818940240726 7/27/2024, 12:30 AM View bp-89b4ca44-d0f4-4c9c-863f-01fab0240726 7/27/2024, 12:30 AM View bp-58f79dd0-dc63-460c-ac2e-6b9530240726 7/27/2024, 12:30 AM View bp-39f7438c-8d02-4458-9e5f-66c150240726 7/27/2024, 12:30 AM View bp-9af0b7a8-2bef-4397-b9d8-a85260240726 7/27/2024, 12:30 AM View

Google search no longer works on Firefox. Other browsers have no problems. Changing the default search engine on Firefox works (eg Bing), BUT. It can now find Google Maps, but Google Maps cannot find a location, because it uses a Google search. I tried the fix in about:config, but it had no effect.

Firefox stopped working with my VPN on when I updated my OS to Sonoma, yesterday. I use PIA for my VPN.

I have done the following, so far, restarting my system several times between trying these things:

Checked that internet connection and modem are fine. All pages load in Safari, with VPN running, but I prefer Firefox.

Checked the Network settings for my Mac. Ensured that No Proxy was selected.

Cleared my Firefox cookies, cache and history.

Tried running in troubleshooting mode, turning off all extensions.

Tried turning off Advanced Tracking Protection, which I usually run on Custom.

Refreshed Firefox.

Finally, I turned off my VPN and, viola, all sites work. Turned it back on, and can’t navigate, again. For instance, I tried to open YouTube, and got a blank screen. Turned off VPN, and got to main YouTube page. Turned the VPN on and tried to log in…nope. Turned it off and logged in. Turned it back on and tried to open a video….nope. Turned it off and opened the video…etc., etc..

I very much wish to continue using both Firefox and my VPN. Can you suggest a course of action? Thank you for any advice you can give!!

Hi, not sure what I'm doing wrong, but my logins and passwords simply will not synch between devices. I principally use a desktop Win10 machine, and an iOS version of Firefox. Have double-checked settings on both devices, tried forcing a manual sync from each to the other, all to no avail. Any ideas on what I need to do differently? TIA.

I've just switched to firefox from brave, and theres no button on twitch to enable picture in picture. Using the keyboard shortcut (cmd+option+shift+]) works, but I'd much rather click something on the screen. On brave there used to be a picture in picture button alongside settings, theatre mode, and fullscreen buttons, but on firefox this has been replaced by a clip button. There's no option for it if I right click (this works on youtube), and no option in the address bar for either twitch or youtube. I've tried disabling all my extensions and lowering protections but nothing seems to work.

Similar to the issue described in this thread (https://support.mozilla.org/bm/questions/1240674), I am unable to open Firefox - it simply refuses to open. I've tried multiple times, the option key, and re-installing. Nothing seems to work, which suggests something about my user settings is the issue, but a) I am not keen on deleting this if possible and b) I won't delete my user settings unless that is necessary. Like the attached thread, I am happy to attach crash reports, but without the ability to even open Firefox properly it's not obvious how I do this - force-quitting it just sends a report to Apple.

Any help much appreciated - I'd quite like Firefox working again.

My laptop is a MacBook Pro 13 2020 (Intel) running macOS Monterey (12.7.4). I installed the version of Firefox available for download as of writing (v127.0 based on Finder).

Yesterday I had Picture-In-Picture (shortened into pip for next mentions) working on youtube, then after one day, PIP no longer works on any of the websites, including youtube. I tried disabling and enabling pip, entering troubleshoot mode, and none of them worked. Not reinstalling because it will be annoying to log in everywhere I've had account at.

Any solution?

Hi, I often have multiple Firefox windows: 2-3 windows fully expanded, the rest minimised down in the right hand side of my Dock on my MacBook Air.

This makes finding a particular web page difficult among the minimised windows. If I hover over each minimised window only a description of the most currently visited webpage is displayed.

But if I had a way to label the entire window, and I grouped similar webpages together each a window, then at least I could go straight to one particular window to search for the webpage, rather than have to go through all of them.

Can someone explain how to do this, pointing me exactly to where the button that needs to be pressed etc is?

Thanks.

Hi, I've upgraded to Windows 11 today and couldn't open Firefox since. Things I've already tried:

• Reinstall Firefox and delete all old files (Appdata & Program files)
• sfc /scannow and DISM.exe /Online /Cleanup-image /Restorehealth
• Windows compatibilty mode
• Firefox Troubleshoot mode won't open either
• ipconfig /release & /flushdns & /renew
• netsh int ip reset & netsh winsock reset

When opening Firefox in any way, i get a white window/just the window border which immediatly closes. When trying to start troubleshoot mode, the small window has the same issue.

I also checked the crashlogs and none were generated. The Windows event-logger also has no entries.

BTW: Here is a video of whats happening: https://youtu.be/AJP4rqZFxlY

I have no idea what to do - send help please.

I view a lot of pdf documents via firefox, the light gray background makes my eyes and head hurt after prolonged usage. In the past I found a solution on this forum that advised to set pdfjs.viewerCssTheme to "2" in about:config. This set the background of pdf viewer to black/dark gray. This has worked for years until recently when the pdf viewer switched to light mode again (pic 1). I checked the about:config settings for pdfjs.viewerCssTheme but there appears to be no change. I tried restarting the browser, setting the theme to 0 and to 2 again, updating browser. Sadly the theme is still light gray. Is there a way to change it again? The desired outcome is in pic 2. I do NOT want to change the color of the pdf pages themselves.

The google search bar on the homepage doesn't work, just does an infinite load, the same with google.com. The extensions I have are AVG Online Security, Malwarebytes, and AVG Anti-Tracking. The version is the latest version 116.0.1

Firefox 129.0.2 (64-bit) Mozilla Firefox Snap for Ubuntu canonical-002 - 1.0

Running on kubuntu Linux 24.04, kernel version 6.8.0-41-generic (64-bit) KDE Plasma Version 5.27.11 Qt Version 5.15.13

I've posted a description of my problem on the kubuntu forums: https://www.kubuntuforums.net/forum/newbie-support/help-the-new-guy/681835-firefox-eating-up-a-lot-of-cpu

Here is a synopsis of my posts on that thread to distill the most noteworthy symptoms:

I have snap Firefox installed.

$ snap list Name Version Rev Tracking Publisher Notes bare 1.0 5 latest/stable canonical✓ base core22 20240731 1564 latest/stable canonical✓ base firefox 129.0.2-1 4793 latest/stable mozilla✓ - firmware-updater 0+git.5007558 127 latest/stable/… canonical✓ - gnome-42-2204 0+git.510a601 176 latest/stable/… canonical✓ - gtk-common-themes 0.1-81-g442e511 1535 latest/stable/… canonical✓ - snapd 2.63 21759 latest/stable canonical✓ snapd thunderbird 128.1.0esr-1 507 latest/stable/… canonical✓ - $

If I start firefox from the shell command line, it runs fine. It runs the shell script in /usr/bin/firefox, which ultimately executes /snap/bin/firefox. Clearly that shell script is doing some configuration that I don't understand.

If I​ hit Alt-space I see the menu in the referenced screen grab (see attached).

If I select the first entry, to run firefox from the command line, it has the same effect as starting /usr/bin/firefox from a bash shell; it works fine. However, if I select the third entry, firefox does not play any video; I've mostly tested with YouTube videos that have actual video and audio.

I'm not sure what gets executed when I select the third option from the Alt-space menu. It appears from doing a "ps -ef" that it's the same /snap/firefox/... executable. But I'm wondering why is this entry in the Alt-space menu and how does it get initialized or 'configured' to run.

Additionally, if I do start firefox from the entry with the firefox browser icon, and it fails to play video, I must then uninstall firefox using snap and then reinstall in order to get video playback to work. That is, after a failed start, simply exiting firefox and restarting it from the shell command line will not work; firefox will not play video correctly at all.

I also noticed that on my PC desktop, "snap list" lists firefox as "firefox 129.0.2-1 4793 latest/stable mozilla✓ -"

But on my old Lenova laptop running the same kubuntu version, "snap list" lists firefox as "firefox 129.0.2-1 4757 latest/stable mozilla✓ -"

​I'm up to date on both systems via "sudo apt update"' and "sudo apt upgrade"

Even more frustrating, today, for the first time, despite starting firefox from the command line, video still didn't play. I had to uninstall firefox and reinstall it.

A recent set of system updates appears to have made most website videos not play in Firefox.

When I inspect the Developer Tools - > Console tab the most detail Firefox gives are an error line similar to: Media resource URL could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_METADATA_ERR (0x806e0006)

Internet searches for the error name and error hex do not appear yield any applicable troubleshooting, nor any methods of collecting additional problem data.

How can I obtain more detail on where the error is happening and how Firefox might be interacting with other packages present on my system?

Arch Linux has some older ffmpeg-compat packages, but those don't appear to match any of the web results, in that they're even older versions of ffmpeg.

yay -Ss ffmpeg-compat aur/ffmpeg-compat-55 2.3.6-4 (+24 0.00)

   Compatibility package for ffmpeg to provide versions 55 of libavcodec, libavdevice and libavformat, not anymore provided by the ffmpeg package

aur/ffmpeg-compat-54 1.2.12-4 (+87 0.00)

   Compatibility package for ffmpeg to provide versions 54 of libavcodec, libavdevice and libavformat, not anymore provided by the ffmpeg package

Firefox on Windows 10 desk top suddenly stopped working with error message

XUL Runner Error. platform version 127.0.1 not compatible with Min version >= 127.0 Max version <=127.0

N.B. This is another machine - not this lap top

Please advise