Hyper-V Server R2 - Disk management MMC returns RPC Server is unavailable

Solution 1:

You need to change the Firewall rules on both machines (NOT only the Hyper-V Server)

Run this command on both machines:

netsh advfirewall firewall set rule group="Remote Volume Management" new enable=yes

Solution 2:

For errors "RPC Server is unavailable" when trying to use Disk Management MMC or Server Manager MMC or Computer Management MMC to connect to a Windows Hyper-V (Hyper V) Core Server, please note the following: 1. Enabling "Remote Volume Management" needs to be done on both machines... the Core Hyper V Server and the client machine: On the client machine (Windows 7 and Windows 8 ... XP is no longer supported... lol ;), "netsh advfirewall firewall set rule group="Remote Volume Management" new enable=yes" will run smoothly.

On the Windows Hyper-V (hyper V) Core Server (in my case I am on Server 2012 R2), I was not eble to run the netsh command. I was able to enable "Remote Volume Management" by using the GUI tool "Corefig for Windows Server 2012 Core and Hyper-V Server 2012"... *downloadable from http://corefig.codeplex.com/releases. Version 1.1.1 was stable enough. Good luck!