We are running Opmanager 11 and we are facing the following issues:

SNMP , WMI are enabled on the Hyper-V HOST

we have Windows 2012 Core that is not showing vms . 

The host is detected but vm are showing 0. Deleted it rediscovered it but same result.

Also I noticed that If I add a hyper-V host using only WMI it detected many duplicated VMs? 

Can you please advise?

Thank you.