This forum is for technical support on Blizzard’s Classic Games, Diablo II (2000) mostly.
Modern Warfare II is a game made by Activision; please read this post first . If you are experiencing issues with installation and patches, please refer to the Desktop App Tech Support forums.
This is the wrong forum for the issue you are reporting; as indicated in the linked post above, please contact Activision Support.
Best of luck in your games !