Hyper-V 2012 R2 standalone is a workgroup machine.
My Win8.1 laptop is a domain-joined machine.
I named my workgroup similar to the domain, then added my laptop domain administrator account to Hyper-V local administrators group.
Configure in my laptop following the step here for adding my Hyper-V 2012 R2 standalone machine as trusted host.
https://technet.microsoft.com/en-us/library/jj647788.aspx
Added both ip address and computer name.
Now I manage to enter-pssession from my laptop to Hyper-V standalone machine, but I failed to connect to my Hyper-V from Hyper-V Manager (Win8.1 RSAT). Both using the same credential.
When connect using computer name in Hyper-V Manager, the error message is
"Cannot connect to the RPC service on computer xxxx. Make sure your RPC service is running"
When connect using ip address in Hyper-V Manager, the error message is
"You do not havea the required permission to complete this task. Contact the administrator of the authorization policy for the computer <ip address>"