Anno 1800 Lan Multiplayer Fixed -

This simple batch script can help players quickly reset their network stack and get a fresh start. Save it as a .bat file and run as administrator:

To understand the fix, you must understand the wound. Unlike Anno 1404 (Dawn of Discovery), which had a direct IP-to-IP connection, Anno 1800 uses a hybrid system. Even when two computers sit three feet apart, the game historically forced traffic through the Ubisoft Connect relay servers.

To help narrow down your specific connection issue, let me know: anno 1800 lan multiplayer fixed

Port forwarding is the process of telling your router to direct specific types of traffic to a particular device (your PC). For Anno 1800 , you need to forward the following ports for your PC's internal IP address:

As a last resort, you can place the host's static IP address into the router's . This forwards all traffic to that PC. It is a security risk and should only be used temporarily for testing, but it bypasses all other firewall rules on the router to verify if that is the problem. This simple batch script can help players quickly

This meant that even if two computers were connected by the same gigabit switch, their game traffic was still routed through Ubisoft’s relay servers. The result:

You can have up to 16 players in total, divided into 4 factions. Crossplay: Even when two computers sit three feet apart,

Open Ubisoft Connect, go to the game, click Properties , and select Verify Files . Corrupted files often cause network issues.

A major update was released to resolve severe desync issues on PC. This fix stabilized sessions that previously crashed every few hours.

Corrupted network cache files can prevent your PC from communicating reliably with other local machines or Ubisoft's authentication servers.

I can provide specific steps to troubleshoot your exact network configuration. Share public link