Close multiple instance of a program by command in Windows

How to Close multiple instance of a program by command in Windows ?

Using  taskkill /im notepad comand can close multiple instance of any process.
taskkill-Windows command
im-Image Name (To tell computer that,we are going to use process name Ex:Notepad)
notepad-Process name you would like to close


In my exmaple,I closed 4 instance of notepad by using task kill command

If you want to learn more visit Microsoft tutorial here