In this article, I’ll show you how to create a new Server Certificate with a Subject Alternative Names which means that the Certificate will have multiple names (DNS names).
Using a SAN certificate Is more secure than using a wildcard certificate which Includes all possible host names In the domain.
The process of creating a SAN certificate Involves using the Certificates MMC as you will see below.
From the MMC open the Certificates snap-in
On local computer -> All Tasks -> Request New Certificate…
Select Web Server or other certificate and click on More Information.
In the Certificate properties under Alternative name use the drop-down menu and select DNS
Enter the full DNS name of the Host names you need the certificate to have