title: port 80 for apache server is in use by PID 4 (System) and cannot be stopped
body: <p>I am starting apache at port 80 with xampp. However, the port 80 is taken by PID of 4 by the name system. 
  I have tried Taskkill /F /PID 4 to force kill the task by even using the administor's rights but access is still denied. 
  Any idea on how to solve this problem (I don't want to change the port of apache)</p>