The identity certificate generated for the server needs to be added to the HTTP server.
Open the Internet Information Services (IIS) Manager by entering iis in the Start menu and selecting the program.
Click on the server in the left-hand pane. In the middle pane double-click on the Server Certificates icon.
On the far right of the window that appears click on Import.
Browse to P12 format certificate file and select it.
After importing the certificate, you can right click on it and select details. Scroll down to verify that the Subject Alternative Name contains all of the fields that you set when you created the identity certificate.
You now need to configure the web server to use the certificate. Within IIS, select the web site to use and on the right select the Bindings. This brings up a pop-up listing the ports in use.
Select the https binding on the default secure port 443, and click on Edit.
In the SSL certificate drop-down, select the certificate to use. Click OK.