So here's my setup, xbox one, series x and a pc. Multi-player between the series x and pc have no issues, but when I try to invite the Xbox one on either the pc or series x, I get "Unable to join world" and the same if the Xbox one tries to join one of the other two. BUT, the Xbox one can invite the series x and pc with no issues or be joined into. Is the pc and series x going into backwards compatible mode when it joins up with xbox one or is the Xbox one having issues on its own. On Minecraft Xbox One Edition, the consoles can go back and forth all day, but you can't do as much and I'm trying to get what I have going since split screen isn't really an option. All NATs are open.