Anno 1800 Lan Multiplayer Fixed [best] ✰

I’ve written it to sound like a helpful player announcement (since Ubisoft hasn’t officially “patched” LAN back to its pre-connectivity state). If you actually have new technical steps or a community workaround, feel free to replace the bracketed details.

Is it perfect? Not entirely. The mode is still labeled “experimental” as of April 2026. Some users report:

: The host should load the multiplayer save in single-player mode, create a new manual save file, and then use that fresh save to host the multiplayer lobby. Switching the Host

A recurring bug where multiplayer saves failed to load has been mitigated. A common community fix involves having the host load the save solo first, creating a fresh save, and then re-inviting players to a new lobby. How to Set Up a "LAN" Session Game Updates | Anno 1800 Wiki | Fandom anno 1800 lan multiplayer fixed

Anno 1800's netcode uses a classic lock-step synchronization mechanism that heavily favors IPv4. If your router distributes IPv6 addresses, it can result in a mismatch that rejects lobby joins or triggers random mid-game disconnects. Press Windows Key + R , type ncpa.cpl , and hit .

Do you have any (these must be identical for all players)?

This isn’t a “fix” for local LAN per se, but it transforms any network into a LAN—perfect for dorm or office play where IT restrictions block local discovery. I’ve written it to sound like a helpful

Ensure every player has the exact same version of Anno 1800 installed. Check the minor build number on the bottom corner of the main menu.

Anno 1800 Multiplayer Fix: Resolving Connection & Desync Issues

Let's address the elephant in the room: No, you cannot play Anno 1800 multiplayer completely offline. The game requires authentication through Ubisoft Connect's servers, and this applies to all multiplayer features. Even the single-player campaign has increasingly stringent online requirements—Ubisoft has effectively removed the true offline mode from recent versions, requiring periodic online re-authentication. Not entirely

Anno 1800 is a masterpiece of city-building and economic management, offering a deep, immersive experience that is even better with friends. However, players looking to host a true Local Area Network (LAN) party often find that the game’s reliance on Ubisoft Connect online services makes direct, offline, or low-latency local multiplayer frustratingly difficult to set up.

If you’ve tried playing Anno 1800 over LAN recently, you know the pain:

Ensure every PC uses the exact same version of the community ( python35.dll ). Check your mods folder located at ...\Anno 1800\mods\ .

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.