Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - Enhanced Edition Cannot Play Coop online multiplayer on Xbox one

The game was tested by Larian and Focus, and went though separate Xbox One certification procedures for North America and Europe, and this problem was not encountered until after release (and even then, specifically trying to reproduce it was difficult).

I don't have an ETA (I'm not directly involved), but there are things being done to address this problem.