Yeah, found that. It's working now, and I was able to fire up my old save without issue, but I didn't really play for long enough to be able to comment about stability on my current setup. Running around Megaton though, seeing the stash was in my house - what a nostalgia hit! Amazing game.
Anyway, as there are a few folks in this thread who like older games, this is really
a PSA for anyone else that might want to ensure they can play GFWL infested games in future years.
The GFWL installer fails every time for me. It seems to download the required .msi files, but it can't run then and MS won't fix it even though they still distribute the installer.
This guide tells you what to do:
https://steamcommunity.com/sharedfiles/filedetails/?id=2291332499
It's pretty straight forward, but I've decided to store a copy of these .msi files in a safe place so I can run them again if I need to, in a future OS install, after MS have stopped distributing them. I don't know for sure it'll work but it can't hurt!
Okay, no more off topic, I'll shut up about GFWL now.