MMH5.5 - Heroes of Might and Magic 5.5

@Grey_Find, here are a few reasons why multiplayer might not be working: - The new map was not distributed to all players. - Map scripts were not activated. - Players did not remove garbage files - the index.bin file and the RMGTemp folder in <game folder>/data. Try following this Map generation guide and keep up with this multiplayer prerequisites. We also have a step-by-step Gameranger setup guide.

Added 1 minute ago
@battleredcat, check this article for an explanation