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Accidentally deleted firefox "profiles.ini" and now says firefox is already running when I try to open it.

kw19

Accidentally deleted firefox "profiles.ini" and now says firefox is already running when I try to open it. "a copy of firefox is already open. only one copy of firefox can be open at one time. Now I'm aware this happens often and people have posted solutions to this, but this situation is slightly different. The "profiles" that possibly had parental lock on it were deleted and I don't know how to get it back. Re-downloading firefox obviously does nothing. Opening the task manager and to try and close all mozilla/firefox files and apps doesn't work either. Tried using Onyx to turn invisible files visible but that didn't work either. I think it's cause I deleted the profiles. Suggestions?

Accidentally deleted firefox "profiles.ini" and now says firefox is already running when I try to open it. "a copy of firefox is already open. only one copy of firefox can be open at one time. Now I'm aware this happens often and people have posted solutions to this, but this situation is slightly different. The "profiles" that possibly had parental lock on it were deleted and I don't know how to get it back. Re-downloading firefox obviously does nothing. Opening the task manager and to try and close all mozilla/firefox files and apps doesn't work either. Tried using Onyx to turn invisible files visible but that didn't work either. I think it's cause I deleted the profiles. Suggestions?

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'Log-off', 'Shut down', 'Restart' and if that fails to work, there's always 'System Restore'!

Any chance of restoring that profiles.ini file via the Time Machine?

If not then you need to use the Profile Manager to re-register that no longer recognized profile.
You do that by creating a new profile and use Choose Location to point the your lost profile.