I-Firefox Community Forum

When I open Firefox in Windows 11 a small window appears that reads, "Firefox Couldn't load XPCOM. I have not found any solutions to stop this that work. Will Mozilla fix this?

For a few weeks now, I've noticed that Firefox will not open properly and gets hung with a rotating circle. I have tried all of the conventional fixes including installing a new version but it doesn't seem to work. In the meantime, I will use Safari and occasionally, up to an hour later, it will open and operate normally...until I restart my Mac at which point the whole process starts all over again. But usually, I just get the finder message "Firefox not responding"

Please advise.

After update to 140.0.2, clicking on Firefox icon in the dock does nothing. The title bar says Firefox is active, but nothing shows on my screen. What changed? Did you reset something in my preferences?

I'm on Win10. This morning I see that MSLOP has updated my desktop PC overnight. FF was open before the update and attempted to restart but couldn't restore pages. I told it to start a new session and the PC blue screened. This has happened before so after the PC restarted I shut it down. It blue screened a few times while also trying to restart FF. I shut it down with the power button. FF will not start with troubleshooting (shift while double clicking on FF icon). It crashes and I get the crash window. Latest crash detail is below. What next? Any help is much appreciated.

UPDATE: I went to windows settings, apps, and clicked on uninstall for FF. Immediately a message box, "Would you like to refresh instead?" popped up. Sure, why not? It thought for a while and updated. I logged in again and I am back to a functioning 147.0.3. I logged into my bitwarden extension and ublock origin is still there. No clue what happened earlier.

For some reason every time I open Firefox the window closes. I can see it's open on my dock, but if I click on it, the window opens and closes again. It's so fast I can't even go to the setting for Firefox. Anyone knows what's going on?

Hi

I have tried to launch Firefox a number of times today and every time it has frozen and does not respond. When trying to select the option of opening the software in Troubleshoot mode, once again the software freezes and I am unable to open the software in Troubleshoot mode . I have tried shutting and re-opening both the software and my laptop but this does not resolve the issue. Can you please either resolve the issue of the software freezing or tell me how I can resolve the issue.

When I try to run firefox 141.0 (Linux x64) I get:

libxul.so: undefined symbol: gdk_wayland_device_get_wl_seat Couldn't load XPCOM.

Is there a way to fix this?

I'm using Slackware 14.2.

I have Firefox installed and pinned to the taskbar. When I click it, it immediately goes to a download Firefox page instead of opening. I then open another tab to get into g mail or anything else. I can then close the download tab and continue. This is most annoying. I tried uninstalling and reinstalling which works but then lost all bookmarks and the answer there was to go to old Firefox and restore, which I did and that worked , however, the download page came with as well and this time in a different more colorful version that is quite long.

I need to uninstal firefox because it is not opening, keep getting message to first close firefox !!! I can not close firefox because I can't get it to open in the first place.

Lately every time I open Firefox on my PC (Win 10) it says that it is already running and that I need to close it first. How can that be if I just started the computer session?