Anno 1800 Lan Multiplayer Fixed May 2026

Ensure your router allows traffic on UDP/TCP port 18000 , which is the official port for Anno 1800's multiplayer services. 2. Solve "Desync Detected" (LR40) and "Trajan" Errors

All players must have identical game data. Use the "Verify Files" tool in the Ubisoft Connect or Steam launcher to fix corrupted assets. anno 1800 lan multiplayer fixed

If you can’t even get your friends into the same lobby, the issue is usually related to how communicates with your network or the game client. Ensure your router allows traffic on UDP/TCP port

Whether you’re playing on a literal Local Area Network (LAN) or just trying to get a stable co-op session running through the internet, here is the comprehensive guide to fixing multiplayer issues in Anno 1800 . 1. Fix Connection & Invitation Errors (LR05, LR39) Use the "Verify Files" tool in the Ubisoft

Ensure everyone is on the same version (e.g., version 18.4). If using mods, every player must have the exact same mods installed and active. Even a single mismatched mod version will trigger a desync immediately. 3. Stability Fixes for Long Sessions