Hyper-V virtual machines show no data about Memory Utilization.
all Vman versions
Hyper-V only provides correct memory metrics for virtual machines which use Dynamic Memory. Virtual machines with Static Memory will show no data about Memory Utilization, only the amount of assigned memory. This also applies to all virtual machines running on Windows Server 2008 without SP, which does not have the capability of providing Dynamic Memory.
If possible, turn on Dynamic Memory.