you can easily find video guides on internet explaining how port forwarding is done depending on your router type. players who enabled required ports have a higher chance to be seen by others in public server list, too. when nothing worked yet, you should go for 'port forwarding' as a last resort, to become a more efficient host (port forwarding is the process of opening certain ports via router interface). if no luck, you might select a friend as host, to whom everybody can connect without any problems. it may sound weird, but it can really be helpful in some cases. if certain ports aren't configured as open in NAT settings of router, then playing with friends can become much harder than it should, let alone playing with randoms in public lobbies.Īt first, you can all restart your games and routers once, then try inviting/joining again to see if it fixes the issue.
basically, onnectivity for co-op modes in WaW heavily depends on network settings, particularly NAT type. co-op modes in this game are indeed troublesome due to the infamous problem you've mentioned above. In many cases, Hamachi and various other VPN software are known to work in WaW as well.