Anno 1800 Lan Multiplayer Fixed [top] Jun 2026

When you start a multiplayer game, Anno 1800 analyzes your Network Address Translation (NAT) to determine connectivity. The status often appears as "Unknown" initially, but the game may eventually change it to "Moderate" or "Open".

Until then, the Direct IP + offline launch method works 95% as well as real LAN.

Right-click your active network connection (Ethernet or Wi-Fi) and choose . Scroll down to find Internet Protocol Version 6 (TCP/IPv6) . Uncheck the box next to it. Click OK and restart your computer. 2. Flush the Desync Cache Folder

If you are attempting to play a LAN match over the internet with remote friends, physical routers cannot establish the bridge directly. Use virtual LAN software to emulate a physical network. Use tools like Radmin VPN or ZeroTier . anno 1800 lan multiplayer fixed

**To fix this, ensure that both Anno 1800 and Ubisoft Connect have been added as exceptions to the Windows Firewall and any active antivirus software. Explicitly add the game executable (Anno1800.exe) to the allowed applications list. Some users have reported that disabling "Microsoft Security Essentials" resolved their connectivity issues.

Delete the temporary files inside these folders to clear old session data.

Despite the lack of a true LAN toggle, Anno 1800 allows up to 16 players in a single session, with up to four players per faction in co-op mode. This makes it ideal for local multiplayer events. Follow these steps to set up a stable local game. When you start a multiplayer game, Anno 1800

Keep these disabled for the duration of your Anno 1800 gaming session. To ensure your next steps are successful, tell me:

These less common errors generally relate to network configuration issues. The Ubisoft support team recommends following their comprehensive connection troubleshooting guide, which includes steps for port forwarding and firewall configuration.

Check game version & updates, match network settings (firewalls, ports, UPnP), verify files, ensure consistent game/crew/season pass DLC across players, and use an offline LAN workaround (direct IP/host tool) if the in-game LAN matchmaking fails. Click OK and restart your computer

: Many players find that disabling IPv6 on their network adapter resolves the "unable to connect" error, especially when playing across different Windows versions.

: A frequent issue involves "Out of Sync" errors. A known community fix involves all participating players deleting the contents of the desync folder located in the Windows user directory for Anno 1800 before restarting the session.

The game offers two primary multiplayer modes:

This open-source tool patches the game’s memory at runtime to:

A common fix for "failed to connect to remote IP" (LR39) is to disable IPv6 on your network adapter. This forces the game to use the more stable IPv4 protocol.