Ah yes, another day, another daft one that caught me out for 10 minutes. I had installed WSUS 3 on a Windows 2k8R2 server and all was going swimmingly. Logged in as the domain administrator on the server, all worked. Then, I wanted to remote administrate WSUS rather than RDP.
I installed the console locally to my workstation and bang, no connection to server. No polite errors such as “You need to be in the WSUS group” or anything, just a straight up “Can’t connect to server.”
Yes, it’s permissions. Drop yourself in to the Domain group “WSUS-Admins” else you aren’t going to connect.