Firefox Support Forum

Ever since Firefox updated to the new version I've been having constant crashes. I've tried restarting in Safe Mood which doesn't help. Pretty much Firefox will open, say it's not responding, and then by the time it looks like it's about to restore my tabs it crashes. I had to do a refresh and transferred the backup files from an older session which worked, but then it eventually crashed again. I uninstalled and reinstalled Firefox and tried opening my older profile but it keeps happening. I really need to restore my previous session. There's nothing with my computer that seems to be causing it. I did have 2 windows open with about 8,000 tabs total which I'm sure could be part of the reason, but it never really had trouble before and only just started crashing since the update. Is there any way to fix this without starting over? I read that this is a bug that others have dealt with previously.

Some additional information. I'm on a 64-bit Windows 10 PC.

Startup Crash False Process Type parent MOZ_CRASH Reason (Sanitized) Failed to load critical module "resource://gre/modules/WebNavigation.jsm" Crash Reason EXCEPTION_BREAKPOINT Crash Address 0x00007ffb8c0f5135

Went to update to 105.0.1 on a windows 8.1 machine. Update failed, removed previous version and now will not even reinstall running the installer. Installer returns setup.exe Application error. unable to start correctly.

Accidentally added a misspelling to the Firefox dictionary. Thought it would be easy to locate and edit the dictionary.

Enabled 'show hidden files.'

On XYplorer, and Windows File Explorer can find not a single trace of 'persdict.dat' in my profiles folder.

It would be really helpful if you could advise what the next step would be. Thanks.

This morning I re-installed an update to Zoom (on Linux - ElementaryOS / Ubuntu 18.04). Since installing, I've not been able to follow links from Firefox to Zoom (zoommtg links don't open the app). However, they still work from Epiphany.

The slight confounding factor is that I realised that I've been updated to FF 104 overnight, so that might be an issue.

I've been looking at network.protocol-handler.... settings in about:config, based on this article: https://superuser.com/questions/1343020/how-to-configure-firefox-open-zoom-urls-using-zoom-application#1351073

I've also been looking at xdg-settings (based on this article) https://www.reddit.com/r/kde/comments/i83m8i/zoom_desktop_client_isnt_launching_from_browser/ which suggests the problems might be to do with xdg-settings calling /usr/share/applications/zoom.desktop when the available file is /usr/share/applications/Zoom.desktop However, I have not been able to alter the xdg-settings parameter - when I try: $ xdg-settings set default-url-scheme-handler zoommtg zoom.desktop it does not change the setting - it remains as Zoom.desktop

I should mention that the version of FF I'm running is delivered as a snap - but this was not a problem before 104 / my latest Zoom installation. Also, this version of FF has no problem opening up MS Teams meetings or Slack groups. handlers.json includes : ... "slack":{"action":4},"snap":{"action":4},"zoommtg":{"action":4},"msteams":{"action":4}}, .... so I am thinking the problem must lie somewhee else.

Any suggestions would be gratefully received.

thanks Andy

As the title says, I cannot get MP4 files to play in Firefox, which renders several websites unusable. These sites work in Edge just fine, but I cannot get them to work in my preferred browser. Everything is up to date, and I have all the codecs I could ever need installed, as well as the Windows N Media Feature Pack. The browser has been tested several times in troubleshooting mode, and I've even gone as far as running Windows in safe mode with networking to try to isolate the issue. I cannot get it to work at all. This is the 2nd device I've had this issue on, and it's driving me up a wall.

Any help or advice would be greatly appreciated.

Firefox 103.0 (64-bit) Windows 10 Pro N 21H2 19044.1865