Anno 1800 Lan Multiplayer Fixed Repack Jun 2026

If using community mods, navigate to your game folder directory: ...\Anno 1800\Bin\Win64\ .

Ensure everyone has the same updates. Ubisoft Connect usually handles this, but a manual "Verify Files" is safer.

If your game is purchased through or the Ubisoft Store

For users who simply cannot get direct connections working, virtual LAN software like Radmin VPN creates an emulated local network that can bypass port forwarding requirements. Community members have reported success using this approach to play together when standard methods failed.

The Windows Defender Firewall frequently blocks Anno 1800 from communicating across local networks. You must manually grant permissions to bypass this barrier. Open the Windows and type Firewall . Select Allow an app through Windows Firewall . anno 1800 lan multiplayer fixed

A major patch (1.3) released in December 2025 addressed several critical issues that plagued multiplayer sessions:

Remaining players must click and enter those credentials.

Anno 1800 relies heavily on Ubisoft Connect infrastructure, even when routing traffic locally. When a LAN connection fails, it is usually caused by one of three culprits:

The game's cross-platform multiplayer system is designed to support up to 16 players across PC, PlayStation, and Xbox, handling invitations, lobby creation, and game synchronization through Ubisoft's online infrastructure. While PC players from Steam, Epic Games Store, and Ubisoft Connect can all play together without issue—since all multiplayer services run through Ubisoft Connect regardless of where you bought the game—this architecture means there's no native "direct connection" option that bypasses the internet entirely. If using community mods, navigate to your game

: For the most stable connection, ensure your NAT type is Open . Forward UDP Port 18000 in your router settings to the hosting PC.

or specific desyncs, I can help you dig deeper. To narrow it down, let me know: Are you getting a specific error code (like LR40)? Are you using Mod Manager Does the crash happen at 30 minutes

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Navigate to C:\Users\[Username]\Documents\Anno 1800\accounts\ . Delete the cache folders found within your specific account folder to clear out old multiplayer session state data. If your game is purchased through or the

The LR40 error is the most common plague in Anno 1800 multiplayer. It happens when one player's game state stops matching the others.

Before diving into complex network configurations, eliminate the most common surface-level culprits. Both you and your LAN partners must check these parameters:

Open the Start menu, type , and select it. Click Change settings (requires administrator privileges). Locate Anno 1800 and Ubisoft Connect in the list.