Opening Port Communication through the Windows Firewall or a Third-party Firewall

On the Hyper-V server, ensure that the firewall allows communication through port 135 and test the Hyper-V connection again.

For details about opening ports, refer to your firewall documentation.
If the connection to the Hyper-V server is unsuccessful, configure WMI to use a fixed port.

For details on Setting Up a Fixed Port for WMI, refer to:

http://msdn.microsoft.com/en-us/library/windows/desktop/bb219447(v=vs.85).aspx
Open ports 135 and the newly created fixed port (24158) for communication through the firewall.
Test the Hyper-V connection again.

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