Right-click in the game folder and select Properties .
Here is a draft for a forum or community post to help you get the fix you need: Iw4sp.exe Crack Fix
Before fixing the error, you must understand the file. In the official retail version of Call of Duty: Modern Warfare 2 , the single-player executable is simply called iw4sp.exe (IW4 standing for Infinity Ward 4, the engine version; SP for Single Player). Right-click in the game folder and select Properties