How do I run call of duty in windowed mode?
Press Alt+Enter while you’re playing a full-screen game to enable windowed mode.
What is windowed mode?
Windowed mode is a way to open an application on your computer so it does not cover the entire desktop. The window can be dragged around the screen or resized to reveal other areas you may need to see. … To switch between windowed applications, use the keyboard shortcut Alt + Tab on a PC or Command + Tab on a Mac.