This code means the OS does not have access to certain required files to run the game. To resolve this issue, restart the game and Steam in administrator mode.
The operating system cannot load a file that is necessary to run the game. A missing DLL may belong to the game, the operating system, or one of the necessary components (e.g., DirectX).
Solutions:
One possible reason for this message is running Steam as an administrator and launching it as a regular user. If this situation occurs, the launcher may display "Updates unavailable - Steam is not running" in its status.
Solutions: