Anno 1800 Lan Multiplayer Link -

: The host's DLC settings apply to the session. If the host enables a specific DLC (like The Passage ), all players must own that DLC to join. If a player is missing a DLC, the host must disable it in the lobby settings. Common Troubleshooting

This means:

The player with the best CPU (Anno is CPU-bound, especially late-game) and most RAM should host. anno 1800 lan multiplayer link