Consider the following scenario:
In this scenario, you may receive the following error message:
Error (2947) Virtual Machine Manager cannot complete the VirtualCenter action on the server hostname.domain.com because of the following error: Error during the configuration of the host: configSpec.guestId. (Unknown error (0x194)) Recommended Action Resolve the issue and then try the operation again.
As of now, there is no resolution or work around for this scenario. The placement of a virtual machine to an instance of VMware ESX Server 3.0 host on an x64-based version of Windows Server 2008 R2 is not supported.
For all the details and latest updates please reference the following Knowledge Base article:
KB979592 - Error message when you try to deploy a newly created virtual machine to an instance of VMware ESX Server 3.0 Host that is running on an x64-based version of Windows Server 2008
J.C. Hornbeck | System Center Knowledge Engineer