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Firefox worked fine for 3 days on my New win 11 computer. then a white screen but still worked OK .However was now loaded by a third party "quit-hp.com/Firefox and the original program has been removed from my apps. So am unable to clean up the mess and cannot block the app from the computer. My first option is to use Malawarebyte and and HitmanPro to clean up the disk or a complete uninstal and reinstall win 11. this scam is hitching a ride on firefox and pretending to be part of the installation. I am prevented from copying the full address of 3rd party to this post.

Simply put, cannot connect to Sync from Firefox (Windows). I can sign in just fine into the Mozilla account (that's how I'm writing the question, after all). However, when I try to sign into Sync it asks for a password, then for an authorization code and then fails with "Bad Request: Something went wrong. Please close this tab and try again."

Tried it multiple times, even in Troubleshoot Mode, got the latest Firefox and all, but this seems like a communication issue, not a browser issue.

My computer had to be "factory reset" last night (I don't know if that's what it's called - but I have to re-install things like my Firefox). When I reinstalled Firefox, it populated with an older version of my Firefox's bookmarks. I have Firefox on my mobile device - and it still has the latest version of my Bookmarks.

The desktop installation prompted me to sync my devices -- but, would this old desktop prevail over my phone Firefox? Or is there a way I can make my phone Firefox replace my desktop version? (I spent about 2 hours organizing my bookmarks into folders, about 3 months ago ... and I've added tons more, of course).

I do have a Firefox Recovery Key that I took note of a year or so ago --- If there's a way to use that, will it give me the bookmarks I had up to yesterday afternoon? If so - how do I use it