You can kill the process and all its children (ie. all processes started by it) using the /t switch: taskkill /f /t /im wwahost.exe See the documentation for taskkill (ss64) and tskill (ss64) system utilities.
It tells taskkill that the next parameter something.exe is an image name, a.k.a executable name C:\>taskkill /? TASKKILL [/S system [/U username [/P [password]]]] { [/FI filter] [/PID processid | /IM imagename] } [/T] [/F] Description: This tool is used to terminate tasks by process id (PID) or image name. Parameter List: /S system Specifies … Read more