Firefox Support Forum

Hello, Since yesterday, the Firefox web browser crashes systematically. This has happened well over a dozen times. I've tried multiple step-by-step solutions: deactivating extensions, troubleshooting mode, repairing firefox, uninstalling and installing Firefox, trying several versions of Firefox (Quantum, ESR, Nightly), downgrading to an earlier version, uninstalling and completely cleaning Mozilla folders on AppData, deactivating graphics/hardware acceleration...

At one point, Firefox was crashing after ten seconds of watching a video on Youtube or another platform. After reinstallation, video playback no longer causes the browser to crash, but closing a tab does.

I am currently using Mozilla ESR 115.12.0. After reinstalling, I lost all the reports I sent. Nevertheless, I was able to reproduce the crash to give you the ID: [https://crash-stats.mozilla.org/repor.../a2d0f5de-d03f-450b-88f8-a8fdc0240705] Another crash report : [https://crash-stats.mozilla.org/repor.../71c602f6-c682-4158-9880-24d6a0240705]

According to the crash table, the reason for the crash is as follows: EXCEPTION_STACK_BUFFER_OVERRUN / FAST_FAIL_GUARD_ICALL_CHECK_FAILURE This reason appears on all crashes.

Thank you.

Firefox 115.12 esr installed on Mac OS Sierra 10.12 on previous older MacPro computer will not update to new Firefox 127 on Mac OS 14.5 on new MacPro computer. Though I downloaded Firefox 127, the about Firefox still says 115.12.0esr (64-bit), Hence, still running 115.12 esr on new computer. How to update to Firefox 127 and keep all passwords, bookmarks, settings, data? Thanks for your help.

I'm trying to troubleshoot a connection error and cannot find anything about 'SSL_ERROR_INSUFFICIENT_SECURITY_ALERT'? What is this trying to tell me exactly? Is there documentation or a debugging switch to elaborate this error, or is it really necessary to dig into the source code to find out about this? Even mozilla search and google comes up empty.

I'm running 115.12.0esr on Linux. I have another Linux system running 115.7.0esr that has no problem connecting to the same URL.

Thanks!

I recently bought a new laptop and didn't import Firefox to the new one. Now I can't access my passwords etc on Firefox because it asks my for my primary password. I have no idea what that might be. Does anyone know if there is any way to recover the passwords please?

Hi, got a problem for the last several days - on each visited site Firefox (my guess) is launching a pop up about add-ons for Ad Blocks tham I am using were updated with official national filters for Polish market.

This is super annoying and the pop-up jumps on almost every new site bieng visited (it is visible for ca. 5 seconds). Is there any way to stop it? How can I dissable this feature?

Thanks, r.