How to change your web site from https://localhost to https://mydomain.com

There are three steps you need to take to make it work.

 1. Modify your hosts file under \Windows\System32\drivers\etc\hosts and add the following entry:

127.0.0.1    mydomain.com

2. Turn off your proxy dection from the IE,

 Go to Tools->Internet Options->Connection->LAN Settings, uncheck everything

3. Modify your binding in the IIS manager to use mydomain.com instead of localhost as host header.

https://blogs.msdn.com/wenlong/archive/2007/08/02/how-to-change-hostname-in-wsdl-of-an-iis-hosted-service.aspx

BTW, you need to remove the quote here. 

So instead of

cscript //nologo %systemdrive%\inetpub\adminscripts\adsutil.vbs set W3SVC/1/SecureBindings “:443:www.fancydomain.com”

you shoud do

cscript //nologo %systemdrive%\inetpub\adminscripts\adsutil.vbs set W3SVC/1/SecureBindings :443:www.fancydomain.com

Hope this helps.