Anno 1800 Lan Multiplayer Fixed ✦ Secure

| Protocol | Port Number(s) | Purpose | | :--- | :--- | :--- | | | 80, 443 | Core web traffic and secure connections for authentication | | TCP | 14000 - 14043 | Ubisoft Connect game communication | | TCP | 18000 | Primary game data | | UDP | 3074 | Xbox Live/peer-to-peer networking (used by many games) | | UDP | 18000 | Primary game data (listed as UDP by some sources) |

Here's the proven method that works for most players:

While up to 16 players can theoretically play together (4 teams of 4 in co-op mode), practical performance depends on hardware and network quality. Start with 2-4 players before attempting larger sessions.

Ensure both Anno1800.exe and your VPN software are allowed through the Windows Defender Firewall. 4. Hardware and Performance Fixes anno 1800 lan multiplayer fixed

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.

Use a "Clean Boot" to ensure other apps aren't hogging the bandwidth required for real-time synchronization. 🧩 Mod Mismatch Checklist

Cross-play between PC and Console is sometimes disabled during patch windows to prevent version mismatches. 🌍 Step 3: Optimization for Local Play | Protocol | Port Number(s) | Purpose |

Right-click your active physical network adapter and select .

Right-click your active internet connection and select .

Ensure all players have activated or deactivated the same downloadable content (DLC) packages. Mixed DLC ownership can cause immediate lobby disconnects. Use a "Clean Boot" to ensure other apps

Synchronization errors occur when the game state differs between players.

The Windows Defender Firewall frequently blocks Anno 1800 inbound and outbound traffic. You must manually create explicit rules for the game executable and the Ubisoft Connect launcher. Add Firewall Exceptions Press Win + R , type control firewall.cpl , and hit .

Right-click your active internet adapter and select .