So the "Microsoft Gaming Service", whatever the hell that is, had an update that appears to have killed my ability to boot up the Launcher. Everything was fine before I saw that prompt, now a process doesn't start no matter where I try to boot from; desktop, start menu, storefront, nothing works.

If PC: Unstall the MS Store version, go to Arks-Layer, install the Tweaker Version (at least until the Steam Launch), install, run the 'fixes', run the MS Store Fix, enjoy the game.

Believe me, it is worth the time.