So I've created a domain controller (DC) as well as 3 machines (SQL-A, SQL-B, SQL-CORE). All are running Windows Server2008R2 (on virtualbox). I have successfully joined the 3 machines to the domain controller.

Next I created a user in active directory called Kim_Akers who is a member of "Domain Admins", "Domain users", "Enterprise Admins" and "Schema Admins". However when I login to SQL-A for example as contso/Kim_Akers and then try and run something like the ServerManager.msc I can't do it due to lack of permissions "Windows cannot access the specified device, path or file. You may not have the appropriate permissions".

What am I doing wrong that Kim_Akers doesn't have permissions to do this?

Thanks.