Anno 1800 Lan Multiplayer Link |work| Here

Configure your session (Sandbox settings, DLCs, AI opponents). Invite Players

The host sets up the game rules (victory conditions, map type, starting resources, and whether it’s a Free-for-all, Team, or where multiple players control one company). anno 1800 lan multiplayer link

This is where most guides get it wrong. You cannot simply "Browse LAN Games." You must use the or Direct Invite method, which, behind the scenes, uses the local IP. Configure your session (Sandbox settings