Modern antivirus programs are highly sensitive. Sometimes, during a routine system scan or a game update, an antivirus tool flags iw4sp.exe as a "false positive" (mistaking the game file for malware) and automatically quarantines or deletes it. 2. File Corruption
The modified iw4sp.exe you see discussed on forums strips out the multiplayer bloat and DRM, allowing the campaign to run smoothly at high resolutions and unlocked framerates. call of duty modern warfare 2 iw4sp.exe download