Gears of War help

I’ve downloaded gears of war for pc, but i can’t get the co-op to work. I made one computer running the game the host and the other the client, but the client computer cannot find the host. any help? :mrredhat:
Answer #1
Try checking your firewalls (if you have any). Also check for game patches.
Answer #2
Game is patched up to the most recent one.
Firewall’s allows the game though
Answer #3
im not sure but last game i played online on comp required me to open my port to host a game
try that?