virtualbox.org

I am trying to start a VM and I am getting the error:

Failed to open a session for the virtual machine Linux.

VT-x is not available (VERR_VMX_NO_VMX).

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

Now I have read on other similar posts that you need to boot into the BIOS to enable VT-x and booting into the BIOS is a manufacture specific process. I have a Dell and if I press F12 during the boot process I get the BIOS settings but I cannot find anything about virtualization or VT-x. Anyone else have a Dell that has a similar problem? This VM used to start just fine but the "upgrade" to Windows 10 seems to have broken it. How do I get it back? Does VirtualBox support a Windows 10 host? Should I rebuild my VM? Any other ideas?

Thank you.

Kevin

If the VM used to work before upgrading to Windows 10 then one could (and probably should) assume that the upgrade has broken something rather than a BIOS setting mysteriously having changed.

Check your Windows 10 installation to see if Hyper-V is installed and running as it will prevent VirtualBox from working correctly. Failing that a guest log file might be of help.

Andy.

I notice in the services that there are a bunch of Hyper-V services available but as far as I can see they are not running.

From this thread you can check by running:

bcdedit /enum

in an administrative command prompt and checking the hypervisorlaunchtype value

Andy.