Oliver Sommer 
2008-12-04
Our DPM server someday started to refuse creating new diskbased Protection Groups, but returns an Error code 360: Unable to create Protection Group (Fehler 360: Der Vorgang war aufgrund eines Fehlers beim virtuellen Datenträgerdienst nicht erfolgreich. Fehlerdetails: Unknown error (0x8004244f)).

After some intense troubleshooting with the PG a Support Engineer (Thanks to Walt) found out that the Automount feature of VDS is diabled on Hyper-V Server that are also DPM server, but DPM needs that automount feature to be enabled.
To enable Automount open an elevated command prompt (CMD with administrative rights) and type:
DISKPART
then
AUTOMOUNT
to check if automount is disabled.
To enable automount type:
AUTOMOUNT enable
In the DISKPART prompt:
