Windows often flags old multiplayer ports, blocking inbound peer connections.
To get a 3-player LAN game working in The Lord of the Rings: War in the North lord of the rings war in the north 3 player lan fix
Here is the step-by-step fix.
The game's network engine searches for lobbies by broadcasting across the primary network adapter. If your third player is on a different Wi-Fi band or virtual subnet, they will encounter a permanent "Failed to connect to host" loop. Windows often flags old multiplayer ports, blocking inbound