To test if the port 80 is blocked by Windows, please do the following procedure:

1. Press the "Windows" button on your keyboard;
2. type in "cmd", right mousebutton "Open as administrator";
3. Type in: "net stop HTTP".

Then start the WebService again and test if the site is available: https://localhost/webservice1/en/Operator.html.

If that worked, you can stop the http-service permanently by browsing the registry:

1. Start RegEdit (Windows Key, then type in "regedit", enter.
2. Browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\HTTP;
3. Change the value of start "start" to 4 to deactivate the service;
4. Restart the PC.