Windows 10 Build 10565 Includes An Early Preview Of Nested Virtualization

8:42 PM


As we hoped today Microsoft revealed that they have included the early preview of nested virtualization in Windows 10 Build 10565 which was released to Windows Insiders couple of days back.
  • Hyper-V relies on hardware virtualization support (e.g. Intel VT-x and AMD-V) to run virtual machines. Typically, once Hyper-V is installed, the hypervisor hides this capability from guest virtual machines, preventing guests virtual machines from installing Hyper-V (and many other hypervisors, for that matter).

  •  Nested virtualization exposes hardware virtualization support to        guest virtual machines. This allows you to install Hyper-V in a guest virtual machine, and create more virtual machines “within” that underlying virtual machine.

How to enable nested virtualization:
  • Step 1: Create a VM
  • Step 2: Run the enablement script.
  •       Given the configuration requirements (e.g. dynamic memory must   be off), we’ve tried to make things easier by providing Power shell script
  • This script will check your configuration, change anything which is incorrect (with permission), and enable nested virtualization for a VM. Note that the VM must be off.

  • Invoke-WebRequest https://raw.githubusercontent.com/Microsoft/Virtualization-Documentation/master/hyperv-tools/Nested/Enable-NestedVm.ps1 -OutFile ~/Enable-NestedVm.ps1
    ~/Enable-NestedVm.ps1 -VmName <VmName>

  • Step 3: Install Hyper-V in the guest

From here, you can install Hyper-V in the guest VM.

  • Step 4: Enable networking (optional)

  • Once nested virtualization is enabled in a VM, MAC spoofing must be enabled for networking to work in its guests. Run the following PowerShell (as administrator) on the host machine:

  • Set-VMNetworkAdapter -VMName <VMName> -MacAddressSpoofing on

  • Step 5: Create nested VMs

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