Ensure both Anno 1800 and Ubisoft Connect are allowed through your Windows Firewall. For local play, verify both PCs are on the same subnet (e.g., both 192.168.1.x) and ideally using IPv4 rather than IPv6. Resolving Synchronization & Lag
: Many players have resolved immediate connection failures and "LR40" desync errors by disabling IPv6 on their network adapter settings in Windows. anno 1800 lan multiplayer fixed
"It’s not showing up," she said.
In late 2022/early 2023 (depending on your region), Ubisoft Mainz rolled out . Buried deep in the patch notes was a line that brought tears to the eyes of cooperative builders: "Improved network stability for local peer-to-peer connections." Ensure both Anno 1800 and Ubisoft Connect are