Home > Virtualization > Cannot connect to the virtual machine because the authentication certificate is expired or invalid. Would you like to try connecting again?

Cannot connect to the virtual machine because the authentication certificate is expired or invalid. Would you like to try connecting again?

 
  • When you try to connect to a virtual machine, you receive the following error message:
    Cannot connect to the virtual machine because the authentication certificate is expired or invalid. Would you like to try connecting again?
  • When you start a virtual machine, you receive the following error message:
    ‘VMName’ failed to initialize.
    Could not initialize machine remoting system. Error: ‘Unspecified error’ (0x80004005).
    Could not find a usable certificate. Error: ‘Unspecified error’ (0x80004005).
  •  
    This issue occurs because the Hyper-V Virtual Machine Management service (VMMS) certificate has expired.
     
    Update for Windows Server 2008 x64 Edition (KB967902) to fix this issue.
     
    Download
     
    Notes :
    1. Before you apply this update, the release version of Hyper-V must be installed. For more information, click the following article number to view the article in the
    Microsoft Knowledge Base:
    950050  (http://support.microsoft.com/kb/950050/ ) Description of the update for the release version of the Hyper-V technology for Windows Server 2008

     

    2. To work around this issue, you can generate a new certificate. To do this, follow these steps:

    1. Shut down or save all virtual machines.
    2. Restart the Hyper-V VMMS.
    3. Start the virtual machines.

     Because the Hyper-V VMMS certificate is valid for one year, the update has to be applied to prevent this issue from occurring in the future

    3. You must restart the computer after you apply this update

     
    Categories: Virtualization
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