Φόρουμ κοινότητας «Firefox»

I updated my Mac to macOS Golden Gate. Tried to update Firefox from a non-admin account. It failed. Went to admin account, deleted Firefox and reinstalled from a new dmg download. All fine in the admin account. But the non-admin account (where I work day to day) won't even launch a Firefox window. It asks for admin access to install a helper. I can't see why it needs this but have given it via username and password, but it still doesn't launch. The dock icon says "Running in Background" when I hover over Firefox and the icon bounces. But no browser window

when I went to turn on Firefox this evening, the icon was gone and there was no access to Firefox. The only way I could access the internet was through Safari, which I otherwise never use. This happened 2 or 3 weeks ago but, that time, I was able to find the icon. This time that is not the case.

Sehr geehrtes Team, ich wurde aufgefordert, ein Upload zu starten bei Firefox. Das habe ich versucht. Ich erhalte die Meldung 'Couldn't load XPCOM' Was muss ich tun, um Firefox wieder zu starten ?? Wird dringend wg. Kontoprüfungen benötigt ! Kann dieses evtl. an fehlender Kapazität liegen ? Z.Zt. habe ich 371 MB von 111 KB zur Verfügung. Ich bitte Sie, mir schnell zu helfen - Danke vielmals. MfG Karin Gähler Telefon +49 [phone number removed]

Mozilla Firefox is very slow and even difficult to open.....I am using this browser since ten years and never had any problem....Please do the needful at your earliest...Thank a lot....RASIK MER

Hi, my Machine updated from 140.0.4 to 141.0 since then I cannot start up Firefox anymore. On startup after a short pause the Crash Reporter shows up - interestingly the Crash Reporter may enter a endless loop and opens up multiple times. While that the CPU load is at 100%. I tried

• `firefox --safe-mode`
• `firefox --ProfileManager`

as well, for those I get the same behavior. I tried downgrading to 140.0.4 - after that a profile dialog shows up which tells me that a new profile needs to be created due to a downgrade. After that Firefox comes up fine with the new vanilla profile. IF Firefox updates to 141.0 (in background) the next startup with the vanilla profile doesn't work gain. Which brings me back to the initial problem.

Workaround for now:

• download 140.0.4
• create a fresh profile
• immediately disable auto update
• live with the empty profile

My environment:

• Linux Debian 12 on x86_64
• KDE Plasma
• nvidia drivers installed
• I am using Firefox from `https://download-installer.cdn.mozilla.net/pub/firefox/releases`

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

I am not able to open my Firefox browser tonight. It was work yesterday. WHen I tried to refresh it the wheel kept spinning for over 15 min and there was no sign that it would complete the process.

Overnight firefox doesn't launch anymore.

I have firefox installed via Software Manager flatpak (official Mozilla version) but it doesn't launch anymore. Clicking launch does nothing. Version is 156.0

I tried to launch the program in safe mode via console but it straight up doesn't find it?

I would love to add troubleshooting info but I can't actually get to it. I assume an update broke something but no idea how to solve this, can I go to an earlier version?

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 need help with MacOS Sequoia 15.8.1 (24H32).

Since yesterday’s update to 15.8, Firefox and Thunderbird no longer work—regardless of the build or version. The system immediately terminates the apps with this message in the Apple error report:

System Integrity Protection: enabled Crashed Thread: 0 MainThread Dispatch queue: com.apple.main-thread Exception Type: EXC_GUARD (SIGKILL) Exception Codes: GUARD_TYPE_MACH_PORT Exception Codes: 0x0000000000000203, 0x0000000000000000 Termination Reason: Namespace GUARD, Code 2305843146652647939

Translated with DeepL.com (free version)

After Firefox updated today, the executable no longer starts. I get the following error message:

firefox.exe -- Bad Image

C:\Program Files\<mozilla firefox\gkcodecs.dll is either not designed to run on windows or it contains an error. error status 0x000000d. < p></mozilla>

And then another error message: Couldn't load XPCOM.

Please advise.

I don't use Firefox daily, so not sure exactly when it last opened ok on my iMac (26.5.2). So I downloaded Version=153.0.1 BuildID=20260727124451, and tried again. When attempting to launch, the icon in the dock bounced a few times, then nothing. When repeated, it only bounces once.

Likely unrelated, but I had very recently upgraded my LuLu app (4.4.3) from Objective-See. It monitors outbound connections. But disabling the app changes nothing.

I'm not a MacOS guru. I expect there is an error in a log file somewhere that reveals the problem, but I don't know where to look.

Suggestions?

The full error message is: "The procedure entry point ?WindowsBCryptinitialization@mozilla@@YA_NXZ could not be located in the dynamic link library C:\Program Files\Mozilla Firefox\xul.dll."

After accepting that, I get another message that says: "Couldn't load XPCOM." Then, it just quits, with no Crash Reporter dialog.

I downloaded a fresh installer, but it takes a couple minutes to even launch, and then just sits there for a long time on the initial screen doing nothing before saying the installation failed. I've restarted my computer twice hoping it was a one-off issue, but there's no change.

According to the file information, xul.dll was last changed September 3rd, so it may not be the source of the issue. Perhaps whatever name mangling is responsible for the above entry point changed and now they don't match?

I have automatic updates set to "download but don't install", so it downloaded it a few days ago and I just restarted it this evening and the issue occurred. I could understand that maybe something got corrupted during the update, but I have no idea how the installer could also be failing.

Mozilla Firefox is very slow and even difficult to open.....I am using this browser since ten years and never had any problem....Please do the needful at your earliest...Thank a lot....RASIK MER

Hello! I am an avid user of firefox (especially with adblockers) on a windows 11 PC. Unfortunately, I have recently been experiencing an issue where when I attempt to open firefox, a window will open for a split second before instantly closing again. My PC is up to date, I have tried refreshing firefox and doing a clean install, but cannot seem to overcome the issue, or even open it in safe mode. Does anyone have any advice? Many thanks in advance!

Firefox stopped working yesterday. When I open it, it immediately crashes. After multiple times of that I refreshed it as it asked. It then worked ok. However after closing it and coming back later, it again immediately crashes. I then tried uninstalling and reinstalling, but it still does not work.