Debug | Stop Debugging
Click Stop Debugging on the Debug menu to stop the target's execution and end the target process and all its threads. This action enables you to start to debug a different target application.
This command is equivalent to pressing SHIFT+F5 or clicking the Stop debugging (Shift+F5) button () on the toolbar.
For more information about the effects of this action, other methods of issuing this command, and other ways to control program execution, see Controlling the Target.