Disabling Skype To Use, Open And Listen On Port 80 As Well As 443 On Local PC If you really want to install any web server, or maybe an application that requires web pages which is to be served through common HTTP or may be HTTPS ports, i.e. on port 80 as well as on port 443, an error message may appear and suggest that port 80 or port 443 was in use or is being occupied by … [Read more...] about Disabling Skype To Use, Open And Listen On Port 80 As Well As 443 On Local PC