Windows key + R
TYPE %ProgramData%
locate the Battle.net folder and delete it
Reinstall Battle.net
Go to the installation folder. Click on the game folder.
Delete all files, keep only the Data folder.
Then click on the Data folder.Open data file and delete every file which is smaller than 2mb.
Don’t delete any files which are higher than 2mb.
That’s it now will scan your game and repair it without any issues.
Move Call of Duty to Different Drive
Change Game Region
Run Battle.net as Admin
Run Call of Duty Warzone Manually (FROM GAME FILES)