Microsoft Hyper-V Virtual Machine Bus Error

Problem: After I restarted my Windows 2003 guest OS in Hyper-V 2012 host, the network adapter went missing and the Microsoft Hyper-V Virtual Machine Bus exhibited yellow exclamation mark.

Technology: Host is Hyper-V 2012 Server, Guest is Windows 2003 Standard Server running Windows SharePoint Services 3.0, and Hardware is Dell PowerEdge 2950

Solution:

1.      Add legacy network adapter to allow the guest OS network connection.

2.      Do a Windows Update on guest OS.

3.      Uninstall Microsoft Hyper-V Virtual Machine. DO NOT REINSTALL.

4.      Insert the Integration Services Setup Disk from Hyper-V Manager.

5.      Reboot the guest OS.

6.      Allow the guest OS to reinstall an updated driver upon reboot.