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Your Firefox profile cannot be loaded


When I load Firefox, all I get is an error that says: "Your Firefox profile cannot be loaded. It may be missing or inaccessible." I only installed it today, this was the first time I've tried it. I tried the Profile Manager, and got the same error.

Additional System Details

This happened

Every time Firefox opened

This started when...

On installation.

Installed Plug-ins

Fresh install.


  • User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Tablet PC 2.0; .NET4.0C)

More Information

Can't open Firefox, so N/A

  • Top 10 Contributor
  • Moderator
10742 solutions 96657 answers

Did you use Firefox before?

Do you have a file profiles.ini ?


If you have a file profiles.ini then try to delete or rename the file profiles.ini to make Firefox create a new default profile.

See also this page if you have used Firefox before.