Singeplayer seems to work fine (for me) after the initial error message about the GPU not being recognized. Can simply be ignored. At least on an AMD system (others state that the game doesn't start with Nvidia). I've now played for a few hours, created and loaded saves and have had no problems as far as I can tell.

Multiplayer doesn't work at all and the button is greyed out. Seems like you need a Microsoft account.