Firefox Community Forum

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