hebner_phil said

Firefox seems to have reinstalled itself yesterday Dec 14. I have no history, no bookmarks etc It seems to be like a fresh install... It is not a different profile, I just checked that.

hebner_phil said

Firefox seems to have reinstalled itself yesterday Dec 14. I have no history, no bookmarks etc It seems to be like a fresh install...

Look on your desktop. Do you see a folder called; Old Firefox? Look inside. Look for the folder with the latest creation date.

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

Turns out not to be a Firefox issue at all. Somehow, Windows 10 was reinstalled and so everything was gone. Thankfully I was able to restore back to Dec 10 so no real harm done. Thank you for your time.

That was very good work. Well Done. Please flag your last post as Solved Problem as this can help others with similar problems.

Look for a folder called; windows.old