Searching for an typically indicates one of two things: you're trying to fix a crash/missing file error in the original Call of Duty: Modern Warfare 2 (2009)
If the .exe version doesn't match your game's patch version (e.g., v1.2.208), the game will crash on startup anyway. call of duty modern warfare 2 iw4sp.exe download
The file is the original executable for the Single-Player (Campaign) mode of the 2009 version of Call of Duty: Modern Warfare 2 call of duty modern warfare 2 iw4sp.exe download
If you are using a cracked copy (not recommended), iw4sp.exe may fail to validate the game assets. call of duty modern warfare 2 iw4sp.exe download
"Be careful," the top comment warned. "The .exe is picky. It needs the right Steam DLLs to breathe."