Arma 3 Headless Client Steam Authentication Failed Hot _top_ | PLUS × CHEAT SHEET |

: If your mod folders have spaces (e.g., @CUP Units ), you must wrap the entire -mod argument in double quotes in your .bat file.

You fixed the identity crisis. The HC connects. It sits in the lobby. But it never takes control of the AI. You check the logs again. No error. Just… silence. arma 3 headless client steam authentication failed hot

Run HC under a logged-in interactive Steam user : If your mod folders have spaces (e