If you see this:
‘VMName’ failed to initialize.
Could not initialize machine remoting system. Error: ‘Unspecified error’ (0x80004005).
Could not find a usable certificate. Error: ‘Unspecified error’ (0x80004005).
Then this could be your answer:
Symptoms and resolution:
§ You may be unable to start or connect to virtual machines running on Windows Server 2008 or Microsoft Hyper-V Server 2008. This occurs when connecting using vmconnect. Connections made using remote desktop won’t be affected.
§ KB Article 967902 has been created that details the symptoms and resolution. This KB article provides a direct link to download the quickfix to resolve this error.
§ Though this error may occur, the Hyper-V service will continue to operate. Neither the Hyper-V host nor the running virtual machines will go offline.
§ It is not expected that this issue can be exploited for malicious purposes.
§ Customers running Windows Server 2008 R2 Hyper-V beta won’t experience this error.
That last line it my favorite…
I guess we should be running the beta in production… and what’s with the ‘Unspecified error’?