Anno 1800 LAN Multiplayer: Is It Truly Fixed? A 2026 Guide
Open Anno 1800 and go to Game Settings.
Navigate to the "Multiplayer" tab.
CRITICAL: Change the "Network Mode" from "Default" to "UDP". (This is the secret sauce for local stability).
Start your game as usual. Once in your save/load screen, open the Multiplayer Lobby.
Disable Antivirus: Temporarily disable your antivirus software to ensure it's not blocking the game's network traffic.
Add Game Exception: Add ANNO 1800 to your antivirus software's exception list to prevent it from blocking the game's network traffic.
After pulling my hair out trying to host a local game for my friends without relying on Ubisoft’s sometimes-spotty servers, I finally found a stable solution. If you want to play Anno 1800 over LAN (or via Hamachi/ZeroTier) with rock-solid stability, follow this guide.
Step 5: Verify Game Files
Step-by-step troubleshooting
I’ve written it to sound like a helpful player announcement (since Ubisoft hasn’t officially “patched” LAN back to its pre-connectivity state). If you actually have new technical steps or a community workaround, feel free to replace the bracketed details.
