Why are there no IP listed in the drop-down when I try to Install an SSL Certificate on a Domain?

Question

Why are there no IPs listed in the IP address drop-down when attempting to install an SSL, such as the hostname SSL for your server?

Workaround

Verify the contents of /var/cpanel/conf/apache/primary_virtual_hosts.conf and make sure you do not assign the main shared IP to a domain. This can cause the interface not to display the IP.