@speed2 yes, the missions I hosted were marked as unknown. But the main idea was in which directory they were loaded from

It looks like I failed to explain the situation clearly. I fixed this issue by manually downloading the files from the git repository https://github.com/FAForever/faf-coop-maps. And put them in the folder with the steam version of the game, i.e. (Steam/steamapps/common/Supreme Commander Forged Alliance/maps)

@magge When you start a co-op mission, all the missing maps are usually downloaded to the /My Games/Gas Powered Games/Supreme Commander Forged Alliance/maps folder. Or to the directory that you specified in the settings. But when I ran any co-op mission in the console, an error was displayed that the selected map was not found. After a while, I found out that the client was looking for these maps in the Steam/steamapps/common/Supreme Commander Forged Alliance/maps directory. But he downloaded all the maps for co-op to another folder

Hello everyone, I noticed that when I run co op missions, maps downloads from steam FA directory. Should it use /My Games/Gas Powered Games/Supreme Commander Forged Alliance/maps ?