Firefox Community Forum

After a re-start, my Firefox browser on a Dell laptop lost all history and has since also not been collecting websites visited. When opening a new tab, the shortcuts and recently visited websites are also gone and no longer being collected. My CCleaner recently updated itself to a new version but I unchecked the delete history for Firefox (which treacherously is clicked by default - I fell into that trap before). Happy to blame the new CCleaner but that would not explain why history is not being collected now - to me the fault seems to lie with Firefox instead. Another possibility that went through my mind: Is Microsoft sabotaging users of Windows 11 to force them to buy new? PS: Under "Privacy", "History", the setting is "Firefox will remember history", as it always has been and should be. But it has forgotten all previous history and it is no longer collecting any new history either!

I made the mistake I will never make again of signing into a Mozilla account in Firefox. Suddenly everything about the browser was completely different. I realized it had synced to my primary computer without asking me a [expletive] thing about what I wanted to sync or if I wanted to do that now.

How do I unsync the second computer so that Firefox goes back to the way it was before the unexpected forced sync? I had those settings the way I wanted them for a reason.

Firefox 143.0.4 on Ubuntu 24.04