Unreal Engine 4.8.1 Multiplayer Shootout doesn't work

Okay so I tried to run it again and this happened.

Happens even if both of them are windowsAnd when I try is the other way it instantly closes it, no dump log no errors no nothing.

I tried compiling it to see it it worked then but no just this.

(Happens even if both of them are windows)

P.S I’m using windows 7 ultimate 64-bit if that helps at all.