Firefox Community Forum

The latest versions of Firefox (and Tor) are still fixed and work successfully in Windows 7, and this is still relevant.

After all, the Firefox team can also release updated versions, right?

https://github.com/Blaukovitch/Mozilla_Firefox_Windows_7/releases

I have been using Google Messages in Firefox for over a year, and have never had any problem until the most recent Firefox update from Linux Mint. Google Messages loads on the tab, and everything seems fine. But when I click on a conversation on the left, it crashes as it's loading the conversation.

All of my software is up to date, i.e., no new software updates are indicated in the system tray (?) on the panel. Firefox info: mint-001 - 1.0 147.0.2 (64-bit)

System info: Linux Technodrome 6.8.0-100-generic #100-Ubuntu SMP PREEMPT_DYNAMIC Tue Jan 13 16:40:06 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux

 Host: Technodrome Kernel: 6.8.0-100-generic arch: x86_64 bits: 64
   compiler: gcc v: 13.3.0 clocksource: tsc
 Desktop: MATE v: 1.26.2 wm: marco v: 1.26.2 with: mate-panel
   tools: mate-screensaver vt: 7 dm: LightDM v: 1.30.0
   Distro: Linux Mint 22 Wilma base: Ubuntu 24.04 noble

Hopefully this gets fixed soon, because checking my messages using my PC saves so much time.

Thank you

I have recently begun to have hard 'hangs' while attempting to view a video on a site I'm already connected to. I've tried to overcome these hangs, but they continue to happen even after firefox has been in use for a short time. I have to restart my computer, since the hang is locking up all control input.

Since a while, I think it is since I created an extra testprofile with "firefox-esr -P", but I've set my main profile as default again

When opening a link in another program than firefox I get always: a popup "Close Firefox" "Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile."

I do have both firefox and firefox esr, I usually use regular firefox the second came with the debian 13 repository.

I keep the esr to test display issues for reproducibility on my personal desktop, because I manage debian 13 kiosk-style desktops with firefox-esr.

(I noticed also that the regular firefox profiles can not be opened in firefox esr, so I use an extra profile for esr)

I remember in the past being able to disable videos from playing on a page and having a play button I could click to play them manually, am I hallucinating or is this a feature I cannot seem to find ?

I've been using Firefox on Linux since it was Nautilus. Currently running EasyOS Linux Daedalus and Excalibur on different Lenovo ThinkCentre Tiny Core i3-8100t boxes and different drives: A good Samsung SSD and two good flashdrives. 32G new RAM installed on each box. I've been using these boxes for over a year. For the last month or so, ever since updating to v. 146 my tabs have been crashing like crazy! I don't normally have more than 10 tabs open at once. But now, as soon as I open a 5th tab it crashes.

I'm running Top to watch CPU and RAM usage. I see nothing unusual. I've rebooted. Disabled all add-ons and run in Troubleshoot mode. Tabs still crash. My only add-ons are uBlock Origin, Temporary Containers and Dark Mode. It happens whether I have hardware acceleration turned on or off. I don't know what else to try. Here are my most recent crash reports. I hope you can figure out the problem. Thank you so much!

Submitted Crash Reports Report ID Date Submitted bp-570147ea-4ab1-4543-828a-d5b7d0260202 2/2/26, 12:04 PM View bp-6422cca3-a458-4b68-9d70-e4acc0260202 2/2/26, 12:00 PM View bp-6be58295-46a1-411d-a241-3f85b0260202 2/2/26, 2:52 AM View bp-afa98aeb-f15f-418b-abe5-06da80260202 2/1/26, 10:03 PM View bp-9c7632d5-db44-47e3-babf-a2bd70260202 2/1/26, 8:28 PM View bp-95d245df-f31d-4512-80bd-f0d180260202 2/1/26, 8:18 PM View bp-85752e77-2bb1-4f13-a2b5-68fdb0260202 2/1/26, 7:24 PM View bp-ae5d263d-608b-485e-867e-2aa190260202 2/1/26, 7:21 PM View bp-9efef3a5-b1ef-4279-b055-fa4760260202 2/1/26, 7:00 PM View bp-5b05d78e-26d2-4896-bbba-bea6a0260202 2/1/26, 6:58 PM View bp-acbd8424-5545-4e40-afbb-93ca90260201 2/1/26, 12:33 PM View bp-1415051a-9824-44d7-8f87-8fd270260124 1/24/26, 8:47 AM View bp-9c50b2a5-27a7-45f6-a65c-e45070260124 1/24/26, 8:47 AM View bp-28e5e55f-952f-45a9-9c99-44e300260124 1/23/26, 11:37 PM View bp-3b509a00-0a8f-4a67-94ec-fad500260124 1/23/26, 11:37 PM View bp-65b6d54d-cbf7-4045-b189-019fb0260124 1/23/26, 11:23 PM View bp-a5e110b3-6d7d-4aa4-b8a7-439f10260124 1/23/26, 9:32 PM View bp-d74bf5ce-fdcd-41e4-b2be-6ed990260124 1/23/26, 9:12 PM View bp-cebf5062-d3aa-4653-9d64-2ad0a0260124 1/23/26, 6:57 PM View bp-1bcd2f2e-2136-412b-8919-ed96c0260123 1/23/26, 5:54 PM View bp-50d66365-399c-464a-b6f4-8a3230260123 1/23/26, 5:32 PM View bp-95b5ab2b-35d4-4867-8f33-ba1b10260123 1/23/26, 5:26 PM View bp-b7c48b83-02cd-435f-b466-dab650260123 1/23/26, 5:26 PM View bp-1eccdf1e-184f-4cd8-8e1f-1d6cb0260123 1/23/26, 3:33 PM View bp-22b3fe80-9420-403b-84a4-4840c0260123 1/23/26, 12:26 PM View bp-aa6baadc-fa01-4c42-90d5-5d4120260202 2/2/26, 12:07 PM View bp-9cf8b3be-8be4-4fd2-a812-444540260202 2/2/26, 12:07 PM View bp-22f8081d-7052-4962-a699-66b600260202 2/2/26, 12:07 PM View

I tend to have long and extensive conversations on Firefox's Copilot AI but I've run into an issue that makes this more difficult. When I press CTRL + F to search for text through a chat, it only searches on the webpage I have open on the right. I was wondering if there is a feature that exists that does this that I'm not aware of, and if not, maybe that could become a thing later?

NB - For the past half a year I have to sometimes right click to interact with them, anyway

Effectively, I will interact with the extension at the most basic, normal level on something that has interactive elements like a dropdown menu, or basic options.

I will click / right click on the icon and the highlight will appear, then that's it ... the browser then crashes and does not recover. :(

What's worse is that I have to Force Quit and when I restart there is no crash report to send to Moz.

I am just wondering if other Linux users have experienced similar issues.

The attached image is taken at the moment before the 'Force Quit' dialogue opens up in Debian 12 Gnome (Wayland) ...

I have Hardware Acceleration on.

I am about to start testing with it off, but I work from the browser, and do not want performance compromises. So that is (at best) a work-around, and certainly is not a fix.

I'm on version 147.0.2 (64-bit) which would appear to be from the Mozilla Firefox Debian Package mozilla-deb - 1.0 install/repo/whatever ... and the PC specs are: Processor: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz Memory: 32705MB (11893MB used) Resolution: 7680x2358 pixels OpenGL Renderer: Quadro RTX 3000/PCIe/SSE2

These are my media. prefs ... but ... I doubt that it is relevant: media.ffmpeg.allow-openh264 true media.ffmpeg.customized-buffer-allocation true media.ffmpeg.disable-software-fallback false media.ffmpeg.enabled true media.ffmpeg.encoder.cpu-used 7 media.ffmpeg.encoder.enabled true media.ffmpeg.encoder.quantizer-max 35 media.ffmpeg.encoder.quantizer-min 10 media.ffmpeg.vaapi.force-surface-zero-copy 2

They play for a couple of seconds, then the panel they are playing in goes black. They used to work a month or two ago. Videos play fine in YouTube. They also play fine in apps like VideoPlayer and VLC. They play fine in Chromium based browsers Opera, Brave and Vivaldi. My graphics card requires switching acceleration off. I can’t find a switch for that in Firefox.

Problem Videos start playing, then after a few seconds the video panel turns black. Audio may continue. Refreshing does not help.

Environment

   OS: Fedora Linux 43
   Firefox 147.0.1 (also tested Firefox Flatpak)
   Display server: Wayland and X11 (both tested)
   Hardware acceleration: on and off (tested)
   Media Source Extensions: enabled (disabling MSE triggers an “unsupported device” error)

What works

   BBC News videos play correctly in Chromium-based browsers (Brave, Vivaldi)
   Videos play correctly in mpv/VLC
   Other video sites (e.g., YouTube) play correctly in Firefox

What I’ve tried in Firefox

   Disabling hardware acceleration
   Disabling VA-API
   Disabling WebRender
   Disabling RDD sandbox
   Running Firefox under X11
   Using the Firefox Flatpak build

None of these measures help. This suggests the issue is related to Firefox’s interaction with BBC’s player on Linux. Has anyone else seen this, or is there a known workaround?

Hi,

Since last week I am unable to properly use some websites that are failing due to CORS requests, but they were working before. Some examples are es.webuy.com or a local Jellyfin instance. After trying to enable/disable some settings that I thought could be related to the problem, like security levels, I ended up creating a new profile. In this new profile everything works, but as soon as I synchronize my Mozilla account, then these websites start failing again with CORS requests errors.

Any idea about what setting might it be the one causing problems? Or any idea about how can I debug/troubleshoot it myself?

Thanks!

On my steam deck, from time to time, the firefox's touchscreen support seems to switch modes.

The symptoms are:

- Instead of scrolling, one-finger touch-and-drag now zooms in and out (depending on direction)
- The touchscreen no longer lets me select or close tabs, or focus or click in-page widgets
- This mode-switch is restricted to the firefox window in which it happens
  - Moving the tab to a new window results in the new window working fine
  - Other existing windows are unaffected (although they may later experience a touch mode switch  event)

I have yet to determine what triggers this switch, nor can I figure out how to undo it.

at present it is 32bit Llnux Firefox ChaletOS. It appears it wants 64bit Linux but every time it only allows me access to 32bit version which tells me is out of date. What is happening?

While playing chess at lichess.org, browser power management inhibit messaging to the system gets stuck on its current status. That is, if power management is inhibited by media playing on another tab while I play a game, it will get stuck in the inhibited state. If power management is uninhibited while I play (no media playing), it will get stuck in the uninhibited state. This persists until the browser is restarted even if all tabs are closed.

I don't believe it to be a system issue, as the problem clears as soon as the browser is closed. Chrome based browsers do not exhibit the behavior for me, but I tried a Firefox fork (LibreWolf) and it has the same issue. I don't experience this issue at any other website I visit.

Only certain areas of lichess.org cause this behavior, primarily playing a game against a human opponent. I tried progressively blocking media and script requests to narrow down offenders, but I always break site functionality before I can pinpoint anything.

I'm not so much looking for a solution (although that would be great) as I am troubleshooting advice. Is there any way to narrow down exactly what it is about this specific website that is causing the issue?

Hi! I recently had to reinstall Firefox. Logged into the same Mozilla account I've been using for several years, with pretty much the same config files I've been using since I switched to Linux, and suddenly--for the first time in at least a year--Firefox has (again) started trying to "fix" searches I put into the address bar that aren't prefaced with a search engine. How do I turn this off? (For example, if I go to the address bar and type in "cats" I get directed to a page like the first attached screenshot. If I type in "@google cats" I get directed to the second attached screenshot...)

I'm pretty sure I've disabled everything in prefs.js that relates to that. Um. Feature? But clearly I haven't been able to disable it yet! So.