Windows cannot find 'C:\Program files\Mozilla Firefox\Firefox.exe'
Every time Firefox opened
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
Have you manually checked if that file exists?
This may be a problem with Windows, but not with Firefox.
If that file doesn't exist, though, you may need to reinstall Firefox (no data will be lost). You can get it (for free, as always) at http://getfirefox.com/
I found this post through google.
Since yesterday one of my clients machines (Windows XP SP3, FF 3.6.6) has been doing the same thing, the exe exists and the error even occurs if you manually run firefox.exe rather than a shortcut.
A re-install did nothing. It's as if something is stopping firefox.exe from executing, resulting in a not found error by the OS.
I have been having the exact same problem and it is becoming ridiculous; even clicking directly on the application within the Program Files folder will not open it.
I have had this problem since yesterday.
I tried scanning using my normal anti-virus software and no joy.
Downloaded and installed Malwarebytes and it found altered reg keys that were preventing firefox, chrome and safari running.
Once the scan was run and the threats removed firefox started no problem.
Hope this helps?
Do a malware check with a few malware scan programs. You need to use all programs because each detects different malware. Make sure that you update each program to get the latest version of the database.
http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
http://www.superantispyware.com/ - SuperAntispyware
http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free
You can skip the step to create a new profile, that is not necessary for this issue.
You can also try a custom install in a different directory.
I had the same problem but Malwarebytes' Anti-Malware couldnt find it.
Search the registry for zasrakomondohui - you should find a few apps which use something like the above as a debugger.
Remove those keys and should be ok
i have the exact same problem, and even if i manually try to open firefox (from the program files) i still get the same error message, i uninstalled it and reinstalled it and its still the same. please help!
I had this problem until this morning, this is how I fixed it (using xp, don't know how different this is for newer OSs):
Start > Run > regedit.exe
Expand: My Computer > HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > Windows NT > CurrentVersion > Image File Execution Options > firefox.exe
Then deleted the entry that resembled 'zasrakomondohui' as mentioned above. Hope that helps!