First Found the Pid From console and then Stopped the listening service by going to services.msc!
1)Open Cmd as administrator(right click and you can find the option).
2)type "netstat -ano" in the console
3)Find the services running on my required port "80"(here 80 because I don't want the port number to be displayed in the URL).note the PID number.
4)Open Task Manager then , click on services tab. Find the service name of the PID.
5)Type "services.msc" in Run. there find the Service name and right click and disable the service.