Unable to list VMs of Hyper-v in Netbackup backup policy

Hi,

I need a solution,

Master/Media server : Windows 2012 R2 - NBU version 7.6.0.4

Hyper-v server: Windows 2012 R2 - NBU client version 7.6.0.4

When trying to create the backup policy of hyper-v server, we are not able to view the list of VMs, while browse the clients in policy wizard, it is just processing non stop.

can anyone suggest me.

Thanks.