1.) Open IIS and right click on the website you wish to redirect to https and select “edit bindings”.
2.) Change the port number to an unused port. ¬†For example: 8888
3.) Go to the SSL settings of the site and select “require SSL”
4.) Create a brand new IIS website by right clicking on the root node and selecting New -> web site. ¬†Choose port 80
5.) In the new website find the http redirection module in the actions pane. ¬†Click the check box and type in the URL of your website using https.