Server 2008 R2 Hyper-V : Windows 8 and Server 2012 Virtual Machines freeze and crash

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I you are running Hyper-V role on Server 2008 R2 Service Pack 1 or Server 2008 (SP2 not supported) and you decide to install Windows 8 or Server 2012 as a virtual machine you must install an official Microsoft patch found here: http://support.microsoft.com/kb/2744129

 

Details:

Symptoms

Assume that you have the Hyper-V server role installed on a computer that is running Windows Server 2008 or Windows Server 2008 R2. You create a virtual machine that is running Windows 8 or Windows Server 2012 on the computer. However, you experience one or more of the following issues:

  • The virtual machine stops responding.
  • You receive a Stop error message, and the computer restarts. This behavior stops all running virtual machines together with the computer.

Cause

The issue occurs because the Hypervisor does not handle the one-shot synthetic timer correctly.Note The one-shot synthetic timer is also known as the aperiodic timer.

Resolution

Update information

How to obtain this update

Microsoft Update

This update is available from the following Microsoft Update website:

http://update.microsoft.com
Microsoft Download Center

The following files are available for download from the Microsoft Download Center:

Operating system Update
All supported x64-based versions of Windows Server 2008

Download

Download the update package now.

All supported x64-based versions of Windows Server 2008 R2

Download

Download the update package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Prerequisites

To apply this update, you must be running one of the following operation systems. Additionally, you must have the Hyper-V server role installed.

  • Windows Server 2008 Service Pack 2 (SP2)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (SP1)

For more information about how to obtain a Windows Vista or Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849 How to obtain the latest service pack for Windows Vista and for Windows Server 2008

For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply this update, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this update.

Update replacement information

This update replaces the hotfix that is described in Microsoft Knowledge Base (KB) article 2526776. For more information about KB article 2526776, click the following article number to view the article in the Microsoft Knowledge Base:

2526776 An update that enables Windows 8 or Windows Server 2012 to be hosted in a Hyper-V virtual machine on Windows Server 2008 R2
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