Arma 3 Headless Client Steam Authentication Failed Hot Direct

In your mission folder, create or edit description.ext :

-steamport=2306

Verify your -mod= startup parameter in your .bat or TADST profile. arma 3 headless client steam authentication failed hot

The error means your server rejected the HC’s login token. The server said, "You are not running a legitimate copy of Arma 3, or your Steam credentials are invalid." In your mission folder, create or edit description

: If the HC does not have the exact same mods or server-side bikeys as the host, it may be kicked immediately with an authentication error. : Verify that the In your mission folder

: Verify that the HC's .bat file contains the exact same list of mods as the server. If mod names have spaces, they must be enclosed in quotes (e.g., "-mod=@mod 1;@mod 2" ).