: You typically need a "Steamworks and Dedicated Server Fix" (often version 1.4.1 or higher) to enable the dedicated server functionality for cracked releases. Configure stp-steam.ini :

Set AppId=480 (the standard Steam Spacewar ID used for multiplayer fixes).

Because the STEAMPUNKS version uses a custom Denuvo bypass, standard SteamCMD setups may fail without additional fixes.

: Set Server.GamePort (default 24001) and Server.AuthPort (default 8701).