While the "Direct Connection" mode uses UPnP, manually forcing ports for your host PC ensures no NAT issues.
Before diving into the fixes, it helps to understand why the game struggles with local connections.
: Regularly delete the cache folder located inside your Ubisoft Connect installation directory ( C:\Program Files (x86)\Ubisoft\Ubisoft Game Launch\cache ). anno 1800 lan multiplayer fixed
The most important nuance for "LAN play" is how you send the invites. Many players have reported that direct invites through Steam may fail. The widely recommended fix is to use the Ubisoft Connect overlay, which acts as the central authentication hub.
While Anno 1800 lacks a dedicated offline LAN button, the —using stable, high-speed internet to connect via the Ubisoft Connect interface—is the most reliable way to play in 2026. For those wanting to eliminate internet reliance entirely, a tool like Radmin VPN provides the best "fixed" solution, making the game think you are on a stable local network. While the "Direct Connection" mode uses UPnP, manually
This method is stable as long as your internet works, allowing you to play "locally" without the lag caused by distance. Method 2: Third-Party LAN Emulators (Radmin VPN/Hamachi)
If you are looking to get , this guide will walk you through the most effective solutions, addressing common connectivity issues and desync errors as of 2026. The Challenge: Why Anno 1800 Lacks True LAN The most important nuance for "LAN play" is
Ensure both players are connected to the internet.
Follow this comprehensive technical guide to resolve desynchronization, invisible lobbies, and connection drops. 1. Configure the Windows Defender Firewall
Make sure you and your friends are running the same game version. You can check for updates in the game's settings menu or on the Ubisoft website.