Check your Windows Security or 3rd-party Antivirus quarantine for files named steam_api.dll or steam_api64.dll .

A simple restart often clears hung processes that block new connections.

If the original crack is broken, you can often replace it with a universal emulator. Download the latest build of the Goldberg Emulator .

Copy the steam_api.dll (or 64.dll ) from the emulator folder into your game's folder, replacing the existing one. 4. Clean Restart of Steam