I wanted to play coop with my friend but we never saw the server after hosting. We tried over wi-fi, ethernet and ad hoc lan but every time after one of us hosted the server, the other one couldn't join. We tried connecting by searching for local servers and by manually entering IP address. I have windows 8, and my friend has windows 10.

Did anyone else have this issue? Or is it just me and something must be wrong on the system level?