Hi,
The problem seems to be that when systemstate component is backed up, that the Certificate Authority writer is not adding the necessary volumes to the backup set. The error 0x800423f0 = VSS_E_WRITERERROR_INCONSISTENTSNAPSHOT: the shadow-copy
set only contains only a subset of the volumes needed to correctly backup the selected components of the writer.
What you can try doing is stopping the Certificate Authority service - then see if the systemstate backup works, if so, you can modify the C:\Program Files\Microsoft DPM\DPM\Bin\DPMSystemStateBackup.cmd to stop the Certificate Authority service before ntbackup
start and re-starting the service post backup.
Regards, Mike J. [MSFT] This posting is provided "AS IS" with no warranties, and confers no rights.