Unable to conncet to running virtual machines in Hyper V manager

Posted on 2009-12-17
Last Modified: 2013-11-06
Hi all,
I was unable to connect to the running virtual machines on my Hyper-V enabled
Windows server 2008 Standard machine (it used to work before).

I can start and stop the virtual machines via the Hyper V manager, (I can even see that they are running via the little thumbnail) but connecting them just fails.
Question by:Isykaleo
    LVL 7

    Expert Comment

    You cannot connect to a virtual machine when the Windows Server 2008 Hyper-V VMMS certificate has expired

    Author Comment

    Thanks for your answer.
    However, according to the description from the Microsoft support link, if the problem is something to do with the certificate there should be an error message stating that the authentication certificate is expired or invalid, therefore i guess the problem should be caused by something else?

    This VM (running on a CentOS) has been working with no problems for a couple of weeks, but suddenly just stopped  connecting today.

    P.S. I am still able to connect to the other VMs running on windows based system; if this information helps. ><

    LVL 74

    Expert Comment

    by:Glen Knight
    Are you receiving any error messages?
    Check the event log for errors?
    Any more information you can provide?
    LVL 7

    Expert Comment

    When you attempt to "connect" to it, what do you see? A blank screen? An error message?
    If a blank screen, please click on the blank screen and hit the space bar - see if it "wakes-it-up".

    "By default, the Linux kernel will use screen-save option to disable it you need to type command (it turns off monitor VESA powersaving features):"
    LVL 7

    Accepted Solution

    Guest operating systems that are supported on a Hyper-V virtual machine

    CentOS 5.1 unstable under HyperV

    Actually, we have made integration components for SUSE Linux available for Hyper-V. They're available on

    "Hyper-V, however, supports only Windows and SuSE Linux.";jsessionid=YGUT3SN4WH1KPQE1GHPCKH4ATMY32JVN

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