Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Your Firefox profile cannot be loaded. It may be missing or inaccessible.

  • 1 reply
  • 5 have this problem
  • 1 view
  • Last reply by cor-el

more options

I can't even reset firefox because i can't even open the firefox window on my mac. when i try to open firefox it saids Your Firefox profile cannot be loaded. It may be missing or inaccessible. I need help.

I can't even reset firefox because i can't even open the firefox window on my mac. when i try to open firefox it saids Your Firefox profile cannot be loaded. It may be missing or inaccessible. I need help.

All Replies (1)

more options

See:

This is usually caused by a problem with the profiles.ini file and the profile marked as Default=1 in this file is no longer present on the hard drive.

  • Windows: %AppData%\Mozilla\Firefox\
    C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile>\
  • Linux: ~/.mozilla/firefox/
  • Mac: ~/Library/Application Support/Firefox/

You can use one of these to make Firefox create a new default profile or reuse an existing profile:

  • Delete the profiles.ini file to force Firefox to create a new default profile
  • Use the Profile Manager to create a new profile
    Use "Choose Folder" when you create a new profile to select the location of a lost profile and recover this profile