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

  1. 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.

  2. 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:

    https://docs.microsoft.com/en-us/windows/desktop/WmiSdk/setting-up-a-fixed-port-for-wmi

  3. Open ports 135 and the newly created fixed port (24158) for communication through the firewall.
  4. Test the Hyper-V connection again.
Parent topic: Troubleshooting Microsoft Hyper-V Connections