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Firefox (currently 157) continually crashes on my Windows 10 machine. Task Manager shows Firefox downloading sub apps (currently, 11) until memory is full. Then Firefox crashes. Task Manager shows 11 sub apps open right now using 537Mb of memory. I opened in troubleshoot mode. If I open in normal mode, more than 1Gb will be used with 14 or 15 sub apps downloaded. Only two tabs are shown as being opened. This started with one of the earlier updates and newer updates didn't fix the problem. Even emptying the cache didn't help. Do you recommend totally deleting Firefox and starting over from scratch?

Greetings,

I've lost the ability to receive e-mail, Suddenly Thunderbird just quits on me with no warning. Apparently I can still send mail but cannot receive. This is the second time this has happened to me in as many months. How do I fix it? How do I prevent it?

Thanx

FireFox Browser Crashing from Multiple Windows with Dual Monitors causing memory crashes in gnome.

google chrome used to have a brower extension called "The Great Suspender" to stop these crashes. If firefox can't figure this out I am not going to continue using firefox and go back to chrome.

Was kann ich tun? Habe Probleme mit mozilla. Bei derAuführung der Programme Thunderbird ( ständig ) und Firefox ( manchmal ) kommt es zu Abstürzen wie Programm keine Rückmeldung, einfrieren so das keine Eingaben mehr möglich sind und ich jedesmal das Programm schließen und neu starten muß.

Does FF have a maximum number of windows / tabs that can be open at one time? I use 12 workspaces each with multiple windows / tabs in them, roughly guessing ~100 windows and ~8-50 tabs per window

FF randomly hangs / crashes 1-3 times a day for me and has been for some time (over multiple revisions of FF; currently 157.0.1) requiring restarting FF

System: Large workstation, 128G memory, i9-7920x (12c / 24T) Linux, OpenSuSE Leap 15.6 FF source from FF repos, not OpenSuSE

Any settings I need to change to prevent the crashes?

And it is rather annoying that the report does not tell me which addon is misbehaving either. I do know it runs just fine without any addons enabled so hence, the problem lies with a buggy addon and I'm left in the dark about which one.

My Apple desktop crashes frequently in different applications (while in gmail, on Facebook, etc.) and it sends a report to Apple every time. It never does it if I use Safari. If I can reload Firefox to fix it please let me know how to do that. Thanks.

Firefox tabs keep crashing for no apparent reason after this Nova update (its not website specific). here's a list of my top five Submitted Crash Reports (there are dozens more but ill keep this brief): Report ID Date Submitted

• bp-0d889e7b-0c50-4d71-ac37-c37700261002 02-Oct-26, 22:01
• bp-2587c1c7-7ab3-42da-983f-aefe60261002 02-Oct-26, 21:59
• bp-963e9304-f1db-4aac-9d4e-7c8300260829 29-Aug-26, 10:31
• bp-3d6f6fd0-c34a-460a-a1c2-fe9200261002 02-Oct-26, 22:04
• bp-e7f70176-6daf-4c81-a139-56f060261002 02-Oct-26, 22:04

i don't believe its memory issues because my PC has 61.6 GB of 474 GB free, and i never got these crashes before the update, with the same amount of data. dunno what else to add here, let me know if i need to provide something more

I have been having random crashes Firefox Snap on Kubuntu 24.04 (and now 26.04). Sometimes Firefox will run stably for over an hour, sometimes it will crash in less then a minute from (re-)launch. I have tried the usual troubleshooting steps of 'run in troubleshoot mode', 'refresh', disable plugins, but the crashing seems to happen even when running in troubleshoot mode. I also have not been able to figure out any kind of event or user-action that triggers the crash; it might happen while browsing, it might happen while I am not even at my computer. At first I thought 'the Devs will handle this', but it has been some 6 months so I think my case is not very common/pressing to the community. I'd like to take a more proactive approach in solving the problem. I am still a novice at software fixing, so I might have skipped or missed a very basic step in the '10 things to try to fix Firefox'.

I downgraded to Firefox 140ESR yesterday to get rid of the silly circles and gradients. The update was so visually distracting I found the browser to be unusable. However, now almost any website I visit gives me a Gah your tab just crashed. Is there a way to fix this while staying on 140ESR? Please refrain from answering if your solution is to upgrade. Thanks.

Additional details:

• Operating system: Windows (please specify your Windows version if known)
• The issue started on August 25, 2026.
• Thunderbird becomes unresponsive shortly after startup.
• A “System Integration” prompt appears before Thunderbird becomes unresponsive.
• I cannot click any buttons once Thunderbird becomes unresponsive.
• I tested both available profiles (“default” and “default-esr”) using the Profile Manager, but the same issue occurred with both profiles.
• I also started Thunderbird in Troubleshoot Mode with all add-ons disabled, but the issue still occurred.
• I can force-close Thunderbird through Windows when it becomes unresponsive.
• I have not deleted or modified any Thunderbird profile files because I want to avoid losing existing email data.
• The profile containing my email data appears to be “default-esr”.

I would appreciate any guidance on how to identify the cause of this issue and restore Thunderbird without losing my existing emails.