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i cannot start firefox with message your firefox profile cannot be loaded. It may be missing or inaccessible

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  • 3 have this problem
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  • Last reply by cor-el

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i cannot start Firefox with message "YOUR FIREFOX PROFILE CANNOT BE LOADED. IT MAY BE MISSING OR INACCESSIBLE"

i cannot start Firefox with message "YOUR FIREFOX PROFILE CANNOT BE LOADED. IT MAY BE MISSING OR INACCESSIBLE"

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Hello tonygiang, please see : How to run Firefox when your profile is missing or inaccessible

thank you

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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