All thanks to a vulnerability in the royal battle of Warzone 2.0.
A post appeared on Reddit, the author of which shared a working way to play Call of Duty: Modern Warfare 2 using Warzone 2.0 files and replacing some libraries on Steam.
With it, you can go through the story campaign of the game, but multiplayer will not be available. In addition, there is a risk of getting an account ban. At the moment, it is not known how long the ability to bypass the protection of Modern Warfare 2 will be available – probably, the developers will cover the vulnerability soon.
You will find all the details and instructions link. Please note that these manipulations should be carried out at your own peril and risk.