Hyper-V: Failed to create VM required for warm conversion

[guest]

Problem

Hyper-V Conversion fails with the following error:


Error

Final error: 0xe000a400 - Failed to create the standby virtual machine required for warm conversion.
Final error category: Resource Errors

For additional information regarding this error refer to link V-79-57344-41984

Environment

Bengine debugs on the Media Server may show

[6376] 2012-05-01T14:38:17.345 [ndmp\ndmpcomm] - ERROR: 69 Error: Windows LogonUser API failed.

[6376] 2012-05-01T14:38:17.350 [ndmp\ndmpcomm] - ERROR: 69 Error: Windows LogonUser API failed.


Cause

This can occur when the System Logon Account on the media server doesn't have permissions on the Hyper-V server. If for instance the Media Server and Hyper-V server being converted are on different domains.

Solution

Add permissions to the Hyper-V server so that the System Logon Account on the media server has the neccessary rights to connect to the Hyper-V server