Virtualbox Enable Nested VT-x/AMD-V greyed out

cd into the directory that VirtualBox is installed in and run this:

.\VBoxManage modifyvm your-vm-name --nested-hw-virt on

I also had to do the following:

  • Go to Windows Control Panel (you can find it in the search box lower left side next to start button – type Control Panel)
  • pick Programs and Features
  • pick Windows Features in the left pane
  • turn off HyperVisor (Microsoft’s Hypervisor conflicts with VirtualBox)
  • run this at command prompt: bcdedit /set hypervisorlaunchtype off
  • turn off windows feature “Virtual Machine Platform” if it is on
  • reboot

BTW, Installing Docker for Windows 10 – requires turning on “Virtual Machine Platform” which will prohibit VirtualBox from running.

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