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 any other application. It could also happen when there is no web server like Apache or IIS currently installed or running on that system.
While trying to investigate this issue by identifying the application that is being used on port 80, we suspect that the root cause might be due to Skype which allows the users to use the port 80 and the port 443 for alternatives as incoming connections. It uses port 80 as well as 443 for allowing Skype behind firewall in order to connect to the peers or to accept incoming connection with peers though NAT. This wouldn’t be able to connect through the restrictions or firewall that block other ports from opening.
Skype that listens, opens and occupies port 80 as well as port 443 may prevent other applications that require such port for working properly. So, the ability of the Skype for using port 80 as well as port 443 has to be stopped immediately, turned off and it should also remain disabled.
In order to turn off for disabling Skype usage for and listening on the port 80 as well as port 443, we have to open Skype window, after that click on the menu for Tools and then select Options. Then click on the Advanced Tab, after that go to the Connection sub-tab. Here Untick or uncheck that check box for the use port 80 as well as 443 for alternatives of incoming connections option. Lastly, click on the Save button then restart the Skype for making the change effective.