Windows Server 2008 RC1 with Hyper-V Beta is now available

Big news from my team today. Windows Server 2008 RC1 with Hyper-V Beta, the official name of what I've been previously referring to as Windows Server virtualization, has just gone live on The Beta has many improvements over the preview or CTP release - Jeff's got more information of the details on our team blog.

You can download a copy from

More information on the presspass site

IMPORTANT: When you install, you should select English US only, otherwise you may see error 87 when the Virtual Machine Management Service (VMMS) starts. The only workaround in these instances is to start the installation again.

If you recall back to our Community Technology Preview (CTP) release a few months ago, you had to run a couple of packages before the role was present in Server Manager. This is no longer necessary - the Hyper-V role will be present automatically.

Finally, if you have Windows Server 2008 guests built in the CTP, you should move to freshly installed VMs with this build running as the guest. You'll notice now that you no longer have to install the Integration Components in a Windows Server 2008 guest - they will be installed automatically with the OS install.

Have fun and Happy Christmas.


Comments (10)

  1. Anonymous says:

    Me and Hyper-V – the jury is still out…

  2. Windows Server 2008 is available on Itanium – the RC1 download link is However, there are no plans to support Hyper-V on Itanium – it is an x64 role only.



  3. Hi Simone. Thanks!

    Yes, there is a TAP program in place, but the nominations have been closed for some time now-  the spaces did not last long, and there are no openings for additional nominations now. Sorry!



  4. Hi Mark – yes, the same bits of Hyper-V (ie Beta) are in that build.



  5. Simone says:

    Thank you John, Happy Christmas to you and your team, too.

    Is there any plan to open a TAP program on Hyper-V anytime soon?

    Greets from Italy,


  6. Krishna says:

    Hello john,

     Any idea when Windows 2008 will be supported on IA64? Is it there in the road map at all?



  7. Mark Wilson says:

    Hi John,

    Does this US-only limitation still apply in the Escrow build?

    Cheers, Mark

  8. When you install w2k8 not in ‘US-Only’ mode you can correct this in the Control panel.

    Regional Settings/Formats: Current format: English-United States

    Regional Settings/Administrative: Choose ‘Change System locale…’ and select English-United States, Restart the server

    Then Again: Control Panel/Regional Settings/Administrative: Choose ‘Copy to reserved accounts…’, select default AND system account. Reboot the system and Error 87 is solved!


    Kees de Groot,

    Kees at

  9. Eskil Moe says:


    The simplest way to fix it is to set this registry key.

    Windows Registry Editor Version 5.00

    [HKEY_USERSS-1-5-18Control PanelInternational]


    Eskil Moe

  10. Sohail says:

    Kees de Groot,

    Thanks for you  help, it realy works.

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