mohon pencerahan dari para masta,
sy lagi coba membuat localhost,
telah download xampp,tapi begitu mau dijalankan muncul:
10:22:35 AM [Apache] Problem detected!
10:22:35 AM [Apache] Port 80 in use by "Unable to open process" with PID 4!
10:22:35 AM [Apache] Apache WILL NOT start without the configured ports free!
10:22:35 AM [Apache] You need to uninstall/disable/reconfigure the blocking application
10:22:35 AM [Apache] or reconfigure Apache and the Control Panel to listen on a different port

solusinya bagaimana ya?
tks sebelumnya untuk para masta