Anno 1800: Lan Multiplayer Fixed //top\\

Anno 1800 LAN Multiplayer: Is It Truly Fixed? A 2026 Guide

Published by: The Logistics Authority
Date: April 19, 2026

For over two decades, the Anno series has been a cornerstone of city-building and economic simulation. From the peer-to-peer simplicity of Anno 1602 to the deep, complex supply chains of Anno 1800, fans have always craved one specific feature: reliable, low-latency LAN (Local Area Network) multiplayer.

When Anno 1800 launched in 2019, the community was thrilled by its visual splendor and mechanical depth—but dismayed by its multiplayer architecture. The game lacked a traditional “Direct IP” or “LAN Lobby” option, forcing all multiplayer sessions through Ubisoft’s online services. For years, players seeking a true LAN experience were left with disconnects, forced cloud saves, and unplayable lag during internet outages. anno 1800 lan multiplayer fixed

But in 2026, the question remains: Has Anno 1800 LAN multiplayer finally been fixed?

The Official “Fix”: Ubisoft’s Patch 18.0 (Late 2024)

After years of petitions and modding efforts, Ubisoft Mainz (the developers) released Title Update 18.0 in November 2024 as part of the Anno 1800: Complete Edition Year 5 update. Buried in the patch notes was a line that made LAN parties cheer: Anno 1800 LAN Multiplayer: Is It Truly Fixed

“Added experimental LAN fallback mode for multiplayer. When Ubisoft Connect is in offline mode or cannot reach matchmaking servers, the game will attempt direct peer discovery via local broadcast.”

Here’s what that actually means:

Before you start — quick prerequisites

1. Anno 1800 LAN Launcher (by ‘Schwarzweiss’, updated Feb 2026)

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

How to use:

Verdict: This is the gold standard for LAN parties. It works even without an internet connection, supports up to 8 players, and has lower RAM overhead than the official method. No desyncs reported in 2026 tests.

KSB - one of the world's leading manufacturers of industrial valves and pumps

Founded in 1871 in Frankenthal (Germany), KSB has been one of the leading suppliers of pumps and industrial valves for over 150 years. With more than 16,000 employees worldwide and its own sales and marketing, manufacturing facilities and service operations, KSB develops and produces custom-fit pumps for various applications.
As an experienced pump manufacturer, its product portfolio includes building and industrial technology, water transport, wastewater treatment and power plant processes. Thanks to innovative research and development, KSB can meet the most diverse requirements of customers. Benefit from many years of experience and technical expertise as a renowned pump manufacturer.
KSB pump manufacturers: the best solution for your plant
Industrial pumps and valves from KSB cover a wide range of applications and are highly energy-efficient. Products convince with the most innovative technology as well as with systems that have been tried and tested for many years - including the Etanorm water pump. Achieving more than 1.5 million sales worldwide, Etanorm is the most successful standard water pump. With KSB spare parts and services.
KSB ensures the operational reliability of its industrial pumps and valves. The KSB success formula for high-performance pumps lies in the technological strength in hydraulics, materials and automation.
Competent service right from the start
The numerous production facilities ensure that KSB as a pump manufacturer can guarantee customer proximity and first-class service. The experienced specialists are certified to ensure excellent quality and extensive experience. KSB Service takes care of the commissioning, inspection, servicing and maintenance of your pumps, valves and complete systems directly on site.  KSB also provide you with spare parts quickly. This means you get the best service directly from your pump manufacturer.