Menjalankan Virtual Desktop didalam WMS 2012 yang dijalankan sebagai host pada proxmox akan menyatakan Hyper-V ‘disable’ dan proses tidak dapat dilanjutkan, aktifkan hyper-v dengan menjalankan perintah berikut pada WMS 2012 :

Dism /online /enable-feature /featurename:Microsoft-Hyper-V
Dism /online /enable-feature /featurename:Microsoft-Hyper-V-Management-Clients

This installs the Hyer-V roles without the CPU check. I do not believe that it removes the VT requirements, but in my case, the Core i7 has VT and Hyper-V is working. It is also worth noting that I have removed the args: -cpu host flag from the /etc/qemu-server/<VMID>.conf file and it still works.

(https://forum.proxmox.com/threads/hyper-v-in-windows-guest-under-proxmox.7644/)