I notice you've mentioned "steam api init download" — this looks like a command snippet, but it’s not a standard Steam Web API command.

Developers searching for this are usually trying to solve one of two problems:

Temporarily disable your firewall to see if the game launches.

// Ensure you have defined STEAM_APP_ID in your build environment or a steam_appid.txt file if (!SteamAPI_Init()) printf("SteamAPI_Init() failed\n"); return false;

Additional Resources:

The Endpoint: IContentServer/InitiateDownload

void InitializeSteam() // Check if Steam is already initialized if (SteamAPI_IsSteamRunning()) printf("Steam is running.\n");