If you are reading this, you have likely spent the last hour staring at your Arma 3 server console, watching the Headless Client (HC) connect, immediately disconnect, and vomit a red error message:
Go to C:\ProgramData\Bohemia Interactive\Arma 3 Server (or your server profile folder). Open server.log . Look for: "Headless client connected (ID: xxxx)" followed by "Deleting headless client (Steam authentication failed)" arma 3 headless client steam authentication failed hot
Ensure your HC launch command is correctly formatted. Common mistakes include missing quotes or incorrect ports. If you are reading this, you have likely
In server console or in-game as admin:
: Ensure that battlEye = 1; is set in the server configuration and that the HC profile includes battleyeLicense=1; . Some users report that disabling BattlEye temporarily can help identify if it is the source of the "Steam ticket check failed" message. Common mistakes include missing quotes or incorrect ports