Hotfix for running Windows 8 and Server 2012 in a 2008 R2 SP1 Hyper-V Environment

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Hotfix for running Windows 8 and Server 2012 in a 2008 R2 SP1 Hyper-V Environment

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Added by October 8, 2012

Are you having problems running Windows 8 or Windows Server 2012 in a Windows Server 2008 R2 or Windows Server 2008 R2 SP1 Hyper-V Environment?

Recently after installing an evaluation version of Windows Server 2012 as a virtual machine hosted on a Windows Server 2008 R2 SP1 running Hyper-V, the host server received a stop error and rebooted.  The computer restarted and the virtual machines that were guest restarted along with the Windows Server 2012 guest. Shortly after the Windows Server 2012 guest started up, host computer received the stop error again and automatically rebooted.  On this restart, I stopped the Windows Server 2012 guest from finishing the startup process.

After doing some research, I found a Knowledge Base article KB2526776 explaining that the issues occurs because the Hypervisor does not correctly handle the one-shot synthetic time (also known as the aperiodic timer) that is used by Windows 8 and Windows Server 2012.  The Knowledge Base has a link to the hot fix that will allow both Windows 8 and Windows Server 2012 to be guest operating systems on a Windows Server 2008 R2 or a Windows Server 2008 R2 SP1 computer.  Prior to installing the hotfix the Hyper-V role must be installed and a reboot is required after installation.  Once the hotfix was applied both Windows 8 and Windows Server 2012 ran flawlessly.

Useful links;

Learn more about how Microsoft Operating System timers work

The hot fix http://www.microsoft.com/en-us/download/details.aspx?id=34633

Until next time, ride safe.

Rick Trader
Windows Server Instructor – Interface Technical Training
Phoenix, AZ

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