. Errors involving this file typically occur when it is missing, corrupted, or incorrectly flagged as a threat by security software. Common Causes for the Error Antivirus Interference
That's a sharp observation. Looking into steam-api.dll for Call of Duty: Modern Warfare 2 (the original 2009 PC version) is a classic entry point for modding, cracking, or understanding how the game interacts with Steam. steam-api.dll cod mw2