I did a fresh install of server core 2012 R2 datacenter, joined it to the domain and then went to manage it from a windows 8 machine running server manager.
I added the new server to server manager, used the "manage as" to connect with a domain user who is a member of the domain admin group and it still said "Online - Access Denied".
I had to add my domain user (domain admin) to the local administrators group of the server core install to get around this.
I don't understand why this is? When I pulled the list of local administrators on the server core install it had domain administrators listed as a local administrator, so why didn't my domain admin work until I added the user manually?
Thanks for any insight