Mac – VirtualBox VERR_VMX_NO_VMX

virtual machinevirtualboxvt-x

I downloaded VirtualBox, knowing that my computer has VT-X, and I just created two VMs, but when I started them, I saw this error:

Click here to see it

VirtualBox – Error
Failed to start the virtual machine Android.
(Details)
VT-x is not available (VERR_VMX_NO_VMX).

Result Code: E_FAIL (0x80004005)
Component:  ConsoleWrap
Interface:   IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

 [Manually transcribed]

I have previously run VirtualBox on this PC flawlessly. 
Why am I getting this error now? 
How can I get VirtualBox to work?

Best Answer

Thank you Hrobky, this was helpful. At an ASUS i7 with a UEFI BIOS that does not allow to disable safe boot, on a Windows 10 without encryption, it was enough these 2 steps from your solution:

start->GPedit

Computer Config > Admin Templates > System > Device Guard > 
Virtualization Based Security: Disabled

admin cmd:  bcdedit /set hypervisorlaunchtype off

then reboot

with change these setting at BIOS

Boot / Launch CSM : Enable

Boot / Launch CSM / Boot Device Control : UEFI and Legacy OPROM

Boot / Fast Boot : Disabled

Boot / OS Type : Other OS
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