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No matter what I do, I cannot open Firefox - says my profile is missing - But Chrome indicates that Firefox is running.

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Donald Scott
Donald Scott
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No matter what I do, I cannot open Firefox. It says my profile is missing or inaccessible. I have tried everything you suggest with no luck.

When I tried to import my bookmarks in Chrome, though, Chrome indicates that Firefox is running. I am using Chrome now as a backup.

I even uninstalled and reinstalled FF - same error message.

I am dead in the water.

How do I fix this problem?

No matter what I do, I cannot open Firefox. It says my profile is missing or inaccessible. I have tried everything you suggest with no luck. When I tried to import my bookmarks in Chrome, though, Chrome indicates that Firefox is running. I am using Chrome now as a backup. I even uninstalled and reinstalled FF - same error message. I am dead in the water. How do I fix this problem?

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cor-el
cor-el
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  • Top 10 Contributor
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You need to locate the profiles.ini file and delete this file or use the Profile Manager to create a new profile.

See:

This issue is caused by a problem with the profiles.ini file or with permissions/ownership of involved folders/files.

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

  • Delete the profiles.ini file to make Firefox create a new (default) profile
  • Use the Profile Manager to create a new profile
    If you still have an existing profile then click "Choose Folder" in the Profile Manager and browse to the location of a lost profile to recover this profile
    https://support.mozilla.org/kb/Managing+profiles

You should find the profiles.ini file in this hidden location:

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

If clearing the profiles.ini file isn't working then also check the location of the cache files.

  • Windows: *C:\Users\<user>\AppData\Local\Mozilla\Firefox\Profiles\<profile>\
  • Mac: *~/Library/Caches/Firefox/Profiles/
  • Linux:*~/.cache/mozilla/firefox/

You can also try to rename/delete the Mozilla\Firefox\ folder in both above mentioned locations (main, cache).