Cannot install Virtual PC on Windows 7

Discussion in 'Virtual PC' started by Peter Afonin, Oct 25, 2009.

  1. Peter Afonin

    Peter Afonin Guest


    I'm running Windows 7 RC (Windows 6.1 Build 7100) 32 bit. My computer
    hardware supports virtualization, and it's enabled in BIOS.

    When I try to install Virtual PC from this site:, file Windows6.1-KB958559-x86,
    I'm always getting a message:

    The update is not applicable to your computer

    What could be wrong here?

    I would appreciate your help.

    Thank you,

    Peter Afonin, Oct 25, 2009
    1. Advertisements

  2. Peter Afonin

    Bo Berglund Guest

    As stated the Windows7 Virtual PC *requires* built-in CPU VT
    technology enabled in the BIOS on the host machine. If you don't have
    the required hardware then it can't be installed. End of story.

    Your only option in this case is to install Virtual PC 2007, which
    will work even though it is not "supported".
    Supported in this context means if you are eligible to phone Microsoft
    for help on the system or not. It still works perfectly well.

    And of course you can go elsewhere for a working virtualization
    VMWare Workstation, Player and Server
    SUN VirtualBox
    Bo Berglund, Oct 25, 2009
    1. Advertisements

  3. Peter Afonin

    Robert Comer Guest

    As stated the Windows7 Virtual PC *requires* built-in CPU VT
    He says his hardware supports VT and it is enabled, and he wouldn't get
    this error for that problem...

    To the original poster, What version of Windows 7 do you have and are you
    sure its 32-bit? You also say build 7100, that's not the released version
    of Windows 7. (it's 7600)
    Robert Comer, Oct 25, 2009
  4. Peter Afonin

    Bo Berglund Guest

    Right, I misread it as NOT enabled in BIOS...
    He is running a release candidate, maybe he then also must use the VPC
    beta instead of the release?

    I know I tested the W7 RC back before summer and then there was only
    the VPC beta available. But that installed fine in the RC and worked
    as expected.
    I don't think it is wise to mix RC and beta code, and right now when
    Win7 has hit the shops the OP should use the RTM and the VPC released
    Bo Berglund, Oct 25, 2009
  5. Peter Afonin

    Peter Afonin Guest

    Thank you for your response.

    It is build 7100 for RC. According to this article:

    Beta is 7000 and does not support Virtual PC.

    Yes, virtualization is enabled in BIOS. I don't know if something else is
    required, but I do know that in the past I was running Virtual PC on my
    machine. I don't remember what version it was, but it was after 2007, I
    bought my PC in 2008.

    I wonder - if I install an older version of Virtual PC - will it work with
    Windows XP mode? I guess I have to try.

    I would buy the full version of Windows Ultimate, sooner or later I'll have
    to do it anyway, but I'm not sure is it will work either.


    Peter Afonin, Oct 25, 2009
  6. Peter Afonin

    VanguardLH Guest

    It certainly appears the *released* version of XP Mode support
    (confusingly named Virtual PC and installed as an update [KB958559])
    checks that you are trying to install it on a *released* version of
    Windows 7.

    From the article and from other respondents here, it appears:

    build 7000 = beta version
    build 7100 = release candidate (RC) version
    build 7600 = *released* (RTM) version

    According to, build 7600 is the RTM
    (released to manufacturing) version.

    You mentioned the article but that article mentions *beta* for build
    7000. It also mentions 7100 is the *RC* version. Plus it appears you
    already knew you were using an RC version of Windows 7. Looks like
    you're stuck using VirtualPC 2007 until you get the RTM version (build
    7600) of Windows 7.
    VanguardLH, Oct 25, 2009
  7. Peter Afonin

    Peter Afonin Guest

    Thank you, I guess I need to buy a full version.


    Peter Afonin, Oct 25, 2009
  8. Peter Afonin

    Peter Afonin Guest

    Installed the final version - everything is OK now.

    Thank you for your suggestions.


    Peter Afonin, Nov 1, 2009
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.