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Recently, I updated to Win10 2018 April Update (1803 build) and stumbled at a virtualization modes thing.

Intro:

If you run coreinfo -v command you should see 3 lines:

  • HYPERVISOR
  • VMX
  • EPT

Situation:

Before the update, I had first virtualization mode (hyphervisor) as ON and others as OFF (and had never bothered about). After I updated with 1803 build, I noticed I lost ability to start Win10 Mobile emulators and then figured out now I have first mode OFF and others ON.

Question:

Is there any hope to have all three virtualization modes ON same time? Or it's not possible technically?

P.S. coreinfo is an utility written by Mark Russinovich, freely available at https://docs.microsoft.com/en-us/sysinternals/downloads/coreinfo

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  • Is Hyper-V installed? I think that would enable HYPERVISOR and set it to on.
    – LPChip
    Commented Jul 17, 2018 at 16:56
  • Yes, it was installed, and still installed. The only change is virtualization modes on/off setup.
    – Yury Schkatula
    Commented Jul 17, 2018 at 17:13

1 Answer 1

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Not actually an answer, but workaround at least:

  1. Update to Win10 April 2018 update (version 1803)
  2. Make sure you have "Hyper-V" feature installed
  3. Make sure you have "Windows Hypervisor Platform" feature installed
  4. Set virtualization mode to HYPERVISOR (run bcdedit /set hypervisorlaunchtype auto and then reboot)

That way, it seems hypervisor is able to emulate VMX/EPT behavior to guest machines. At least, now I can run simultaneously

  • Visual Studio with Win10 Mobile/HoloLens emulator
  • Android Studio with Android emulator
  • Docker

Hope this could help somebody

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