Anno 1800 Lan Multiplayer Fixed -

: If you're using mods, your mods folders must be identical . Even a slight version difference will cause a "data does not match" error. Option 2: Short & Punchy (Best for Discord/Social Media) Anno 1800 Multiplayer Fixed! 🛠️

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 anno 1800 lan multiplayer fixed

: Manually forward UDP Port 18000 in your router to your PC’s local IP address. Note that routers typically only allow forwarding a specific port to one device, which can cause issues if multiple people are on the same local network. Resolving Desyncs (LR40 Error) : If you're using mods, your mods folders must be identical

: Historically the biggest complaint, severe desyncs (Error LR40) have been largely mitigated by late-stage patches like Game Update 17.1 Jubilee Patch 🛠️ Ensure your router allows traffic on UDP/TCP

: Ensure all players are on the exact same game version. In Ubisoft Connect , select Anno 1800 and choose "Verify files" to fix corrupted data that might cause mismatches. Client & Software Fixes