99 times out of 100 you can kill any process from within task manager, but what about that 100th time when it just doesn’t work?

That’s when it’s time to get out the command prompt.

In task manager, you need to first get the PID.  Click View -> Select Columns and put a check next to PID (Process Identifier).  This will show you the PID in the task manager Processes tab.

Now, open command prompt and run:

Kill -f PID

If the process you want to kill was started by a scheduled task you need to run:

AT HH:MM <path>kill -f PID

or

Soon <path>kill -f PID