Anno 1800 Lan Multiplayer Fixed

Ubisoft’s online services still try to route LAN traffic through their relay servers. The game doesn’t reliably fall back to direct IP / local broadcast.

Open the Windows Start menu, type , and select Windows Defender Firewall .

Ensure Anno1800.exe and UbisoftConnect.exe are allowed through Windows Firewall.

When a LAN multiplayer game crashes or desyncs, loading the save file incorrectly can permanently corrupt the lobby state. Follow this exact workflow to resume your session smoothly: anno 1800 lan multiplayer fixed

However, if you're looking for true offline LAN support that doesn't require an internet connection or Ubisoft server authentication—the answer remains . Anno 1800 was architected as an online-first experience, and despite community wishes, that fundamental design hasn't changed.

I can give you more specific, tailored steps to help fix your issue. Howto: Coop Multiplayer Anno 1800 with a friend on Steam PC

Let the host send the save file to others manually if auto-sync fails If you're still seeing the "LR40" error Ubisoft’s online services still try to route LAN

Navigate to the gameplay settings and set the autosave interval to 5 or 10 minutes. If a critical desync occurs, you can easily re-host from a very recent save point without losing hours of progress.

: 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 issues can be frustrating, but by following these steps, you can resolve connectivity issues and get back to building and managing your city with friends. Remember to ensure you're running the latest game version, configure your network settings, adjust your router settings, and verify game files to ensure a stable connection. If issues persist, feel free to reach out to Ubisoft support for further assistance. Ensure Anno1800

If your router blocks the specific ports used by Anno 1800 and Ubisoft Connect, players will fail to join the lobby, or the game will disconnect within minutes of launching. You must access your router's gateway configuration page to open these ports. Ports to Open for Anno 1800

. While the "LAN" experience can be simulated by playing with others on the same local network, the game still relies on remote servers for matchmaking and session management, which remains a point of contention for players during server outages. Multiplayer Review: Current Status (April 2026)