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Cant start Firefox, profile missing or inaccessible error msg., so can't access Firefox toolbar to look at profile manager.


MAC OS X 10.6.8 running on MacBook Pro. Error occurred last night while I was online, Firefox jumped me out of program I was on. I updated, it was taking so long I closed window. Now I can't open Firefox. I'v tried reinstalling several times, won't work. Keep getting same profile missing or inaccessible error. Suggestions on help blog here keep referring to Profile manager, however, can't access that because I don't have Firefox tool bar, can't open Firefox. Where is the phone number for live help? I'm no Geek. Need simple help please. REALLY WOULD LIKE LIVE HELP, NOT ENDLESS READING OF OTHER PEOPLE'S PROBLEMS, which by the way, have not solved this issue for them either.

End the no-live help nightmare please!

Additional System Details


  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.57.2 (KHTML, like Gecko) Version/5.1.7 Safari/534.57.2

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  • Top 25 Contributor
617 solutions 4263 answers

Hello annie500sl

go to ~/Library/Firefox ( The tilde character (~) refers to the current user's Home folder, so ~/Library is the /Macintosh HD/Users/<username>/Library folder)

then find profiles.ini file and rename it to profiles.iniOLD , then when you start firefox again, a new default profile folder will be created and only a single profile, the new "default", will be listed in the Profile Manager.

This new "default" profile doesn't contain any of the profile data or settings stored in your old "default" profile folder, which still exists but is no longer accessible from the Profile Manager.

Your existing Firefox user profile data, which includes bookmarks, passwords, cookies, preference settings and added extensions, will no longer appear in the new profile but you can transfer the data from the old profile folder to the new default profile folder.

see also : Recovering important data from an old profile

it is a little tricky, but you can do it, step by step.

Firefox don't have phone number for live help. Very few free and open source software projects provide the telephone support you get from a program you pay for.

thank you

davidmlee 0 solutions 1 answers

This procedure got Firefox on Mac to work again for me: (tab) Help -> Restart with Add-ons disabled...