My Firefox profile cannot be loaded. Cannot start Firefox or profile manager, have followed other articles
After a long time, I've decided to reinstall Firefox on my PC. Upon installing it, I got the error "Your firefox profile cannot be loaded. it may be missing or inaccessible." I cannot start Firefox.
After looking online, I found this article on the support page: https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible
I tried opening the profile manager, but can't get to it since Firefox won't start. It also is not accessible through using "firefox.exe -P" in the run dialog box.
So then I followed the directions and found my existing profiles.ini which pointed to my profile file. Wondering if it got corrupted, I changed the file extension to profiles.iniold and moved the whole mozilla folder to my desktop. Firefox continued to give me the same error message.
Finally I uninstalled firefox, deleted the mozilla folder under %appdata%, deleted the Mozilla folder under %programdata%, and deleted any mention of Mozilla in regedit. I finally reinstalled a fresh copy of firefox... and I got the same profile cannot be loaded error.
Is there somewhere that I'm not seeing that needs to be deleted to finally get a fresh install? I don't care about the original profile and am happy to start from scratch, but have no idea what I can still do in order to get to that point. Any suggestions on what I can do to completely remove any remnants of the original install from years ago?
All Replies (2)
Are you possibly using the Firefox MSIX version from the MS store as that version keeps the profile in a different location ?
You can find the full installer of the current Firefox release (109.0) in all languages and all operating systems here:
I don't believe I'm using the MSIX version. I downloaded the installer from here: https://www.mozilla.org/en-US/firefox/new/
I did try downloading the full installer of version 109.0, but still have the "Your firefox profile cannot be loaded. it may be missing or inaccessible." error notification.