Firefox Community Forum

Hello dear Mozilla team,

It has come to my attention that it is the second time, that Firefox randomly restarts (crashes?) and as an consequence of it Loose all of my tab groups, which are really help-full to separate work and projects at work.

Is there something known about this behavior ?

Just to know if it is known why this happens. Or what should I keep in thoughts to prevent it....

Many thanks in advance.

Kind regards,

J.F. Calixto Zarate

Here is the current situation.

Firefox is consistently crashing in Windows 11, either a tab crash or the application itself. I'm not sure how to resolve it at this point. It was sufficiently bad that at first I assumed this was a problem with my Windows 11 installation, and did a complete reinstall of the OS followed by a fresh install of Firefox.

That did not resolve the problem. Firefox is still crashing.

I completely replaced the SSD assuming there was some kind of read/write problem between it and Firefox, did a clean install of Win11 and Firefox, and instead of porting my profile ported only my bookmarks and passwords into a new profile.

It's still happening. I don't know what to do at this point.

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

For the last two days, I have been ubable to access settings (X,). When I click the settings cog in th toolbar, thr toolbar grays out. I have also tried to access settings using the Hamburger Menu, clicking on settings, with the same result. I have clicked on Firefox in the menu tab, same result.

I have closed and restarted Firefox, with the same result.

Additionally, I can only close Firefox by force quitting. I don't know if the two are connected.

TIA. Keith

My Firefox tabs crash repeatedly even when I tried opening them in Troubleshoot mode. When I play videos in the browser, there's this stuttering, buzzing noise while the sound lags, too. Usually it's tabs playing YouTube videos that crash, but I've also had tabs crash when I try to open completely unrelated websites. I've disabled hardware acceleration, repeatedly cleared my cache, and even tweaked some of my GPU throttling settings, but nothing seems to help.

There is a common error documented in https://support.mozilla.org/en-US/kb/firefox-already-running-not-responding but none of the solutions fix my problem.

I have signed out of my PC and mobile devices Done a complete uninstall of firefox on the Windows 11 machine Searched and removed ALL files on the drive associated with Firefox or Mozilla, including cache and temp Searched and removed ALL Firefox or Mozilla keys in the registry Checkdisk Used update to refresh the windows install Multiple reboots

and a fresh download and install of Firefox. And still get the "already running" error. If I wait long enough - several minutes - I will get the "crash report" screen as the background process finally ends.

Any suggestions?

Dear Support Team,

I am currently experiencing a very frustrating issue with Firefox. I have been using it for many years, and it has always been my preferred and most comfortable browser for my daily work. I depend on it heavily, as all my bookmarks and other important information are stored there.

Over the past few weeks, Firefox has been crashing more than ten times a day. I have already tried all the troubleshooting steps suggested in forums and through AI-based support, but none of them have resolved the problem. I also attempted to install and use the Firefox Beta version, but the issue still continues.

In our environment, other users and devices are not encountering this problem, so it does not appear to be related to internal firewall or antivirus restrictions.

Could you please assist me in troubleshooting this issue? I have attached the error screen that appears after the crash along with the crash report for your reference.

No reports shows on about:crashes

Best regards

Hi.

This inquiry is related to Mozilla Firefox web browser from version 140 until 148 for Windows 10 64-bit operating system. Over the years I have rarely updated this type of Firefox web browser, but in the past two or three years I get too many crashes. Some of the crash logs or reports are saved, but nothing else is wrong with the web browser other than random crashes. Now I have the latest 32-bit version installed. Should I use 64-bit instead? But now It has become very annoying. I have maximum ten to fiftheen tabs open at the same time in the web browser, but I never understand anything for why it crashes so often.

Since the last update I’m able to login to my banking websites but there are certain functions when I’m not able to do. Specifically I am unable to open the particular page that allows me to view my previous bank statements and download them. I get a crash problem each time. I bank with Navy Federal credit Union. And One AZ credit union I was able to access these pages using Google Chrome. I am submitting this through my phone browser because using the PC browser will not open your feedback pages. I get a page crash with that also.

Every time I attempt to open any tab on my laptop computer I get the following message.

Gah. Your tab just crashed. We can help! Choose Restore this Tab to reload the page.

(Two buttons)

Close Tab Restore This Tab

Unable to restore tab. It is impossible to use the Firefox with this upgrade. Looks like I need to find another browser.

Terry Knight [email removed]@att.net

HI Since the last update from Firefox. I am experiencing frequent and multiple crashes. so much so I have beenusing google chrome as alternative browser. It would appear to me that the "new" version is unstable. = Version 147.0.4 (64bit).

Do I go back the the previous version? and if so where is it.

Pete

Hola, firefox no funcionaba bien, busque que hacer y lei de enviar los id de informes de fallos, pero como eran muchos los elimine SIN ENVIARLOS, porque no sabia que estaba enviando y ahora no logro poder usar Firefox, lo desinstale e instale nuevamente y todo sigue igual. No se como solucionarlo, necesito ayuda por favor.

I tried to purchase something on Amazon. When trying to log into my Amazon account it asks to perform 2Fa on my mobile or use a pass key. But neither option responds and Firefox is completely locked up - cannot tab, select menu options etc. I have to use the Apple Mac Force Quit screen to kill it. But when I open Firefox again, the same tabs appear and it's still locked up on the Amazon screen. Cannot use Firefox at all now, forced to use Chrome. How can you reset FF. so that it just opens a new screen?

• OS: Debian (trixie)
• Firefox version: 149.0b3

Firefox suddenly crashes without any displayed error. Attempt to troubleshoot it in "safe mode" doesn't help (it also suddenly crashes.

• When I had redirected following output: "Exiting due to channel error."
• after restart, I launched "about:crashes", but there were no entries

this feature absolutely DOES NOT WORK on ANY Firefox desktop browser on MULTIPLE machines I have tried - and actually I'm pretty sure I can say the same thing about the ANDROID app too?

I can confirm EVERY SITE I have trouble signing in using Passkey on Firefox I can SUCCESSFULLY sign into on Chrome - every single time - the issue is clearly the BROWSER

worse still, it often COMPLETELY CRASHES Firefox and I have to forcibly KILL the process and restart Firefox, after even ATTEMPTING to use this feature

I have tried it on M1 Macbook Pros, on Ubuntu desktops (24.04 LTS) and also on Android

right now I am typing this in on a Firefox I literally just had to Force Quit and restart on a Mac - build 147.0.2 (aarch64)

My GPU is the integrated GPU on the Intel U7-155H CPU. When some AVC videos are played, the browser reacts extremely slow and the video image is glitched and at a really low rate of frame, and the video decoding engine seemed to be 100% occupied as shown in the task manager (normal video playback never occupied so much of it). Seems like AV1 encoded video never triggered the problem. The problem doesn't always happen, but at a rather high frequency. This never happened before I updated the Intel graphics driver from 32.0.101.5972 to 32.0.101.6129. The problem seemed not to happen on other browsers such as Microsoft Edge.

I have been having issues with Firefox since the new update. It will work for 5-10 minutes and then cashes and freezes my Macbook. I then have to restart my entire system. I have always loved using Firefox but lately its more of a pain and have been thinking of changing,