: Ensure Universal Plug and Play (UPnP) is enabled in your router settings to help the game discover local players automatically.
If you are playing in the same building and experiencing lag or "Failed to connect to remote IP" (LR39) errors, try these fixes: anno 1800 lan multiplayer link
: On your Ethernet or Wi-Fi properties, uncheck "Internet Protocol Version 6 (TCP/IPv6)." This is a common fix for Anno 1800 connection issues. : Ensure Universal Plug and Play (UPnP) is