[Solved] VirtualBox Won't run VM on Windows 10 builds 17123 and 17074

Discussions related to using VirtualBox on Windows hosts.
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: VirtualBox Won't run VM on Windows 10 builds 17123 and 17074

Post by mpack »

bmcd77 wrote:I suspect the issue is that VirtualBox thinks it should use Hyper-V here which is not available.
Hyper-v is the name of a competing software product, not a PC feature. It's the same as suggesting that VirtualBox expects to see VMWare or KVM.

The hardware feature required by all such platforms is called VT-x on Intel hosts, and AMD-v on AMD hosts. Hyper-v needs to be disabled because it grabs control of that processor feature and doesn't share.

If Hyper-v is enabled, or VT-x is disabled in the host BIOS, then you can't run 64bit VMs, nor VMs which use>1 CPU, or >= 4GB RAM, or any variant of Windows (32bit or 64bit) > Win8, and the last who knows how many Win server editions. These will not even appear as options in VirtualBox if your host doesn't support them.

Installing a 64bit OS into a 32bit template obviously won't work either.
bmcd77
Posts: 9
Joined: 4. Apr 2018, 14:49

Re: VirtualBox Won't run VM on Windows 10 builds 17123 and 17074

Post by bmcd77 »

Having checked I thought everything, (BIOS options on, Hypervisor off (a variety of cmd and powershell cmd's executed), VirtualBox installed and repaired with Admin permissions)

including the BIOS I eventually started looking at deviceguard in Win 10. Some reading pointed out it actively guards VT-X etc

I found this post viewtopic.php?t=77120#p383348

which explains turning it off in the registry. I did that and my virtualBox is now showing the 64 bit entries. Hallelujah! That took me a day and a half.

My acceleration tab is now not greyed out also.

Hopefully this helps someone else.

Oh and of course my 64 bit VM now starts.
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: VirtualBox Won't run VM on Windows 10 builds 17123 and 17074

Post by mpack »

Good news. Thanks for reporting back.
josebenavidesg
Posts: 1
Joined: 23. Apr 2018, 04:18

Re: [Solved] VirtualBox Won't run VM on Windows 10 builds 17123 and 17074

Post by josebenavidesg »

Yo tengo windows 10 como host, virtualbox y vmwareWorkStation:

Hice los sgte:

1) Desactive Hper-V desde las caracteristicas de windows (panel de control)
2) Aplique desde la consola modo administrador el comando:
bcdedit /set hypervisorlaunchtype off
3) dism.exe /Online /Disable-Feature:Microsoft-Hyper-V

4) Ejecute powershell en modo administrador
Y aplique el comando :
Disable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-All

Luego se reinicio windws 10 y demoro unos 2 minutos en partir,
Y ya habia recuperados la VM VirtualBox y Vmware Workstation.

Esoero esto les sirva.
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: [Solved] VirtualBox Won't run VM on Windows 10 builds 17123 and 17074

Post by mpack »

I'm glad you got it working, but having said that - what you did is pretty much the same as the instructions given in the FAQ: FAQ: I have a 64bit host, but can't install 64bit guests.
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