If you do not own the game, do not hunt for cracked EXEs. Call of Duty: Modern Warfare 2 (2009) goes on sale on Steam for as little as $9.99 multiple times per year. For the price of a lunch sandwich, you can own the game legally and then use the free official patch to make it work.
If you’ve typed into a search engine, you are likely confused. Why can’t you just launch the game from Steam? Why do so many forums point to this specific .exe file? Is it a hack, a mod, or a virus? call of duty modern warfare 2 iw4sp.exe download
By selecting the iw4sp_legacy beta branch, you avoid malware, respect the developers’ work, and get a perfectly stable single-player experience. If you do not own the game, do not hunt for cracked EXEs