Convert VirtualBox .ova into .vhd for Hyper-V

There is an original utility VBoxManage.exe in VirtualBox directory - and it can do exactly the needed.

Commands are following:
press Win + R
write    "   cmd   "  and press Enter

 cd C:\Users\Administrator\VirtualBox VMs\

VBoxManage.exe clonehd --format vhd "C:\Users\Administrator\VirtualBox VMs\kali\kali-disk001.vmdk" "C:\Users\Administrator\VirtualBox VMs\kali\kali.vhd"


0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
Clone medium created in format 'vhd'. UUID: ae53be6e-e7db-4998-b3a1-467d4af5f101

C:\Program Files\Oracle\VirtualBox>