You receive an error message when you try to upgrade the WSv preview build installed on Windows Server 2008 RC0 or on Windows Server 2008 RC1 to the Windows Server 2008 RC1 build with Hyper-V beta or to the release version of Windows Server 2008

Article ID: 939853 - View products that this article applies to.
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SYMPTOMS

Consider the following scenario:
  • You have the Windows Server virtualization (WSv) preview build installed on one of the following:
    • Windows Server 2008 Release Candidate 0 (RC0)
    • Windows Server 2008 RC1 (RC1)
  • You try to upgrade to one of the following:
    • Windows Server 2008 RC1 build with Hyper-V beta
    • The release version of Windows Server 2008
In this scenario, you may receive the following error message:
Uninstall the following windows components and features:
Microsoft Windows virtualization – Please read Microsoft Knowledge Base article: 939853
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CAUSE

This problem occurs because Windows Server 2008 cannot be upgraded if the Windows Server virtualization preview build is installed. You must perform a clean install.
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RESOLUTION

To upgrade to the Windows Server 2008 RC1 build with Hyper-V beta or to the release version of Windows Server 2008, follow these steps:
  1. Close all the virtual machines that are currently running.
  2. Note the configuration settings for each virtual machine.
  3. Format the operating system volume, and then reinstall Windows Server 2008.
  4. Install the Hyper-V role in Server Manager.
  5. Re-create your virtual machines and your virtual network switches.
Note If the following conditions are true, you must reinstall the operating system and the integration components:
  • You attach a virtual hard disk (.vhd) file that contains an installation of Windows Server 2008 RC0 that was installed by using the Hyper-V preview build.
  • You attach a .vhd file that contains an installation of Windows Server 2008 RC1 that was installed by using the Hyper-V preview build.
For a .vhd file that contains an installation of Windows Server 2003, you must reinstall the integration components.
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MORE INFORMATION

For more information about Hyper-V, visit the following Microsoft Web site:
http://technet2.microsoft.com/windowsserver2008/en/servermanager/virtualization.mspx
(http://technet2.microsoft.com/windowsserver2008/en/servermanager/virtualization.mspx)
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Properties

Article ID: 939853 - Last Review: February 21, 2008 - Revision: 1.1
APPLIES TO
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Standard
Keywords: 
kbexpertiseinter kbtshoot kbprb KB939853
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