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Issue with latest Firefox update -- Firefox no longer starts

After Firefox updated today, the executable no longer starts. I get the following error message: firefox.exe -- Bad Image C:\Program Files\<mozilla is either not desi… (read more)

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

firefox.exe -- Bad Image

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

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

Please advise.

Solved Archived 2 509
Firefox Launch failure
Art Monzingo replied 1 year ago

firefox is already running but is not responding

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… (read more)

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?

Solved Archived 5 560
Firefox Launch failure
SuMo Bot replied 1 year ago

Does this have something to do with Firefox?

Every so often for the past few days this "unfinished" program window has appeared on my pc on top of a normal Firefox window (see attached png). Does this have something… (read more)

Every so often for the past few days this "unfinished" program window has appeared on my pc on top of a normal Firefox window (see attached png). Does this have something to do with Firefox? I think the same thing appears when I first open Firefox, then it gets "filled in" and appears as a normal Firefox window. I am running Firefox 133.0.3 (64-bit) on Windows 10 Pro Version 22H2 build 19045.5247 Windows Feature Experience Pack 1000.19060.1000.0.

Solved Archived 8 163
Firefox Launch failure
Ron Zoscak replied 1 year ago

Can't launch firefox stable after launching firefox nightly.

I have this message after returning from nightly version to the stable one: ``` Using an older version of Firefox can corrupt bookmarks and browsing history already saved… (read more)

I have this message after returning from nightly version to the stable one: ``` Using an older version of Firefox can corrupt bookmarks and browsing history already saved to an existing Firefox profile. To protect your information, create a new profile for this installation of Firefox. ```

Locked Archived 1 360
Firefox Launch failure
TyDraniu replied 1 year ago

How do I fix Firefox not opening?

I had two profiles, was in the process of trying to learn how to use the 2nd profile (as seen in the link below), which I still have no answer for. Somehow, maybe I held… (read more)

I had two profiles, was in the process of trying to learn how to use the 2nd profile (as seen in the link below), which I still have no answer for. Somehow, maybe I held down SHIFT for too long and clicked on something by accident, idk, but somehow, I ended up REFRESHING the 2nd profile, causing it to delete everything I had done with it, and it backed up the old profile onto my desktop in the process. I figured I could just simply delete the new profile folder it had created and put back my old profile in the profile folder, but now, Firefox will not open at all, saying "Your Firefox profile cannot be loaded. It may be missing or inaccessible." How do I get it to recognize the profile folders again? OMG, I'm using Microsoft Edge, please, get me out of this!

https://support.mozilla.org/en-US/questions/1479231

Solved Archived 2 341
Firefox Launch failure
jscher2000 -... replied 1 year ago