Saturday, March 7, 2009

Hyper-V unable to find usable certificate

If you go under MMC and add certifcates I had two certifcates, one that didn't have a private key and one that did. Deleting the cert that didn't have the private key and restarting the Hyper-V Virtaul Machine Management service after that fixed the issue. Most reports of this issue are that the cert is expired. Might want to take a look at this KB967902 article if this issue continues.

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

'VMName' failed to initialize.
Could not initialize machine remoting system. Error: ‘Unspecified error’ (0x80004005).
Could not find a usable certificate. Error: ‘Unspecified error’ (0x80004005).;en-us;967902&sd=rss&spid=12925


Anonymous said...

What certificate? can you please help identify the certificate from the list of certificates categorized under My User, Computer, or Service certificates.

Patrick Nielsen said...

My issue was coming from the Computer account certificates under the personal folder. From there I noticed the cert signed for my computer name was not valid.