Unsolvable Hyper-V / SCVMM issue : Error 2912 coupled with a VMRC error.

Hyper-V is definitely growing on me the more and more I use it at client sites but occasionally something will come along that makes me yearn for the good old days of ESX. ;)  This was one of them.  Two identical physical servers, both with Windows 2008 R2 installed running the Hyper-V role.  I was configuring System Center Virtual Machine Manager to manage them and was consistently receiving this error whilst trying to add Host 1.  Host 2 added without issue.  This process is similar to adding Hosts to vCenter.  Host 1 for some odd reason would just not add.  Network connectivity was fine since I could ping back and forth, upwards, downwards and sideways without issue.  I ran through pretty much every troubleshooting idea I could find on the internet (Rebooting, Uninstalling Roles, Clearing out Certificates, Resetting WinRM, Turning off firewalls and antivirus, etc..) but could not get this thing to add correctly to SCVMM. 

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Unfortunately, error 2912 seems to be a catch all error for SCVMM providing no real concrete errors other than something went very wrong. Disappointed smile
After a great deal of failed troubleshooting, I ended up rebuilding the entire server fresh and proceeded without issue.  I just don’t know what went wrong and that irks me.  I can only really assume that it was a failed Windows Update or incorrect patch sequence that went awry on one and not the other.

On a more positive note though, I did run across a great tool to assist in tracing communications between Hyper-V hosts and SCVMM in VMMTrace.  Check it out.

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