: 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
) instead of hosting from the "Host Game" menu. Use a tool like to simplify this setup. IP Whitelisting arma 3 headless client steam authentication failed hot
Before you reply to a forum post, verify this checklist line by line: : If the HC does not have the
Confirm Steam session