Open up services.msc and locate the service “World Wide Web Publishing Service”, stop the service or process and you can set it to Manual or Disable.
Another solution is to shutodwn the service via an admin console with command sc stop W3SVC
Service Name: W3SVC
Display Name: World Wide Web Publishing Service
Description: Provides Web connectivity and administration through the Internet Information Services Manager
Path: C:\WINDOWS\system32\svchost.exe -k iissvcs