Virtual domain controller cloning failed to obtain Winlogon Notification. The returned error code is %1 (%2). For more information ...

Virtual domain controller cloning failed to obtain Winlogon Notification.
The returned error code is %1 (%2).

For more information on this error, please review %systemroot%\debug\dcpromo.log for errors that correspond to the virtual domain controller cloning attempt. 

Details on virtual domain controller cloning can be found at http://go.microsoft.com/fwlink/?LinkId=208030