Firefox Community Forum

When I try and open Firefox, a window pops up for a millisecond before going off my screen, and firefox doesnt open. This is extremely irritating as i downloaded firefox since I also cant open chrome. Is there a fix to this, I have restarted my computer and have uninstalled and reinstalled firefox.

Thanks, Nathan

export GDK_BACKEND=x11 MOZ_ENABLE_WAYLAND=0 MOZ_DISABLE_WAYLAND=1; /mnt/bootdrive/firefox3/firefox/firefox -P tx1p72s0.dev-edition-default XPCOMGlueLoad error for file /mnt/bootdrive/firefox3/firefox/libxul.so: /mnt/bootdrive/firefox3/firefox/libxul.so: undefined symbol: gdk_wayland_device_get_wl_seat Couldn't load XPCOM.

Has support for X11 been removed?

I am still using Win 7 but converting to Win 11. The most recent "patch Tuesday" update from MS killed Office 2016. Since then Fire Fox will occasionally pop up the "Couldn't load XPCOM." (no file extension) warning. It may do this when opened but not always. Can also occur in the midst of a session.

Program seems to be working correctly but some of my pinned locations disappeared when this started. New locations are retained between sessions. Is there a problem with continued operation with this warning? Is there something that I can do to repair it.

Howard Neuschaefer [email removed]@sbcglobal.net

Firefox keeps crashing on my laptop I've had it run very successfully on the same laptop the first time i installed it it crashed the same way it does now but one day it randomly worked and continued working for about 9 months however at some point it crashed and i deleted it and reinstalled many times at best i have downloaded it and have managed it to run for about 10 minutes then closed and failed to load properly now it fails to launch completely at worst it doesnt run at all .i have tryed downloading it from the microstoft store and your website this time i downloaded it from Microsoft please help!

в моменте браузер перестал запускаться , я люблю твикать и оптимизировать виндовс подумал дело в ней , но переустановил виндовс скачал обновления виндовс и начал по одному шагу оптимизировать и делать настройки виндовс , по итогу настроил точно так же как и раньше , но браузер работал , скачал античит фейсит и перестал работать , сейчас переустановил виндовс не настраивал вообще только скачал браузер и античит фейсита и браузер перестал запускаться выдавая ошибку

Hi, We are using Horizon VDI terminal server. Firefox is installed on these servers. Some users get Firefox is already running but is not responding error. Ending Firefox via task manager does not work. I log off the user and have them log in again, but it does not work.

When I check, I see that the user's profile file cannot be created on any terminal server.

Is there a solution to this problem?

Firefox was working perfectly up until this morning and I'm pretty sure there wasn't a new update today. But now when I open the app a new window will briefly pop up for a fraction of a second and then disappear. Unfortunately this prevents me from accessing troubleshoot mode or crash reports so i can't provide much information on specifics.

I followed the steps here: https://support.mozilla.org/en-US/kb/firefox-keeps-crashing-startup and they haven't worked so far. I tried a clean install and restarting my computer multiple times, but no dice. There also don't seem to be any compatibility issues with the most recent version in the release notes.

I’m suddenly unable to open Mozilla Firefox at all on my Windows 11 Pro (version 25H2) Surface Laptop. The browser never launches - every attempt immediately crashes and opens the Firefox Crash Reporter.

I tried uninstalling and reinstalling a fresh copy of Firefox (and removing the old application files, though the original Firefox program folder has 13 .tmp files inside a “tobedeleted” folder that I can’t delete), but the issue persists. When I try to install or uninstall Firefox, I get the same behavior: Firefox never opens, and I end up with multiple instances of the Crash Reporter popping up instantly.

Tried renaming firefox.exe as well to no avail. Chrome and Edge are working fine.

Hello,

I am looking for help with a Windows 11 Pro 24H2 system. Firefox no longer works despite a clean uninstall and reinstall, including deleting all related folders.

When I reinstall Firefox, the error appears, but the application still manages to launch. However, after a system restart, the issue comes back.

When launching Firefox, I get the following message: “Firefox.exe failed to start correctly (error 0xC0000022).”

I can’t find any recent information about this issue. Thank you in advance for your help.

I click on Firefox Icon, the icon explodes out then nothing happens. I have also tried clicking on it while pressing the option key so I can go into troubleshoot mode and get the same result. I have not found anything so far that addresses this particular situation.

I was already logged into my firefox account with my iPad. The bookmarks from my computer were synced to the cloud. I am pretty sure, however, that my last session was not synced, that is, I am pretty sure that all the windows I had open on my computer were not synced to the cloud.

What do you suggest to get Firefox going again? Ideally, I would like to bring back the sites I had open on the computer the last time I used Firefox on it. Possible?

thanks

Kevin

I cannot get into Firefox due to an error message that keeps coming up. Your Firefox profile cannot be loaded. It may be missing or inaccessible.

I have tried deleting and reinstalling it, but it didn't really uninstall completely. I have tried a few suggestions from online, which didn't work. I also tried right clicking on the Firefox symbol and went into some of the different options, but nothing worked for me.

I had been using the Mozilla Firefox VPN for a few weeks, but now it will not launch. I sign in without a problem but when I click on the VPN icon on the toolbar, nothing happens. I just get the pop-up to try the VPN and "Get Started" (see attachment).

Please advise.

I've rebooted, even did a hard reboot, total 3 times, tried system restore, 1 hour past update, deleted Firefox, reinstalled, still "in use", deleted Norton, still same. Reinstalled norton. There NO BUTTON, SWITCH, there! I can File, new blank page, still nothing. Sort of reminds me of automakers, all look alike! Left side, simple, turn on sc or import, at the opening first time, import short cuts and bookmarks from previous page, turn off Newsweek. Simple, without the hassle of now, those that have cleared, happy for you! For me same thing at the top, yellow bar, "in use!"