If you know the name of a process to kill, enter the following command from a command prompt to end it:

taskkill /IM application.exe

This will ask for confirmation to savw if there are unsaved changes, before terminating the process. To kill the same process by force, add the /F option to the command line. With the /F option, it will terminate all matching processes without confirmation.

To kill a single instance of a process, specify its process id (PID). eg:- if the  process to terminate has a PID of 420, use the following command to kill it:

taskkill /PID 420