ADFS 3.0, Error Installing "The Server is not operational"

Have been picking at this one for about a week now.
Windows Server 2012 R2, Domain Joined, Wildcard SSL certificate [*.ad.domain.com], Domain Admin Credentials

While configuring ADFS 3.0, I am receiving a very generic, non specific error message:
"The Server is not operational"

The only thing showing in the Windows Event Viewer is:
Event ID 102
FederationServices-Deployment
Error: An error occurred while trying to configure this machine

Any help would be appreciated. This is a good one!