You set up a Hyper-V virtual machine on a host computer that is running Windows Server 2012 R2 or Windows 8.1.
You set the Automatic Stop Action setting of the virtual machine to Shut down the guest operating system.
You restart the host computer.
In this scenario, the guest operating system (OS) on the virtual machine does not shut down. Additionally, after you restart the virtual machine, the following event is logged on the guest OS:
Event ID: 6008 Message: The previous system shutdown at time on date was unexpected.
Note If the computer is part of a cluster, this issue does not occur.
This issue occurs because the Virtual Machine Management Service tries to shut down the virtual machine by using the Virtual Machine Worker process. However, the process encounters a logic failure that causes the shutdown operation to fail and reverts the shutdown operation. Therefore, power cycling occurs instead of a clean shutdown.
To resolve this issue, install update rollup 2887595. For more information about how to obtain this update rollup package, click the following article number to go to the article in the Microsoft Knowledge Base:
2887595 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: November 2013
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates