virtualbox.org

So, I'm new to VirtualBox, and I wanted to create a Windows Server 2019 VM on my Win10 host.
If I create the VM and select the corresponding ISO file for booting, I get the "loading files" bar, then a Windows Logo appears and I instantly get a "Guru Meditation Mode" Error.
Reading through other threads with this issue, I made sure again that virtualization is enabled in BIOS (It was and still is).
I also created a Windows 10 VM which did not have this error and could proceed to installation.
I added the Logs folder and a screenshot of the "loading files" bar in case that helps.

Your log contains these lines:

{timestamp} HM: HMR3Init: Attempting fall back to NEM: VT-x is not available
{timestamp} NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...

You might notice in the guest window's Status Bar the green turtle: The choice of animal is appropriate: Your guest is running, just really slow. Or it might guru-meditate. This is because a service that uses Microsoft Hyper-V is running on your host PC. Normally Hyper-V blocks Virtualbox. But your PC is of the type and OS where Virtualbox can attempt to run the guest using the Hyper-V engine. This arrangement is still being developed and isn't 100% yet.

If VirtualBox is running without Hyper-V enabled, and nothing else is interfering with hardware virtualization (VT-x / AMD-V), then the usual virtualization icon () will be seen in the Status Bar.

To turn Hyper-V off completely, do this:

1. Shut down all programs. You will have to reboot your host.

2. Look into the 64-bits tutorial, 2nd post, points 2 & 3 and ensure that none of these things are running.

3. Find the Command Prompt icon, right click it and choose Run As Administrator.

4. Enter this command:

bcdedit /set hypervisorlaunchtype off

5. Enter this command:

shutdown -s -t 2

6. When the computer turns off, unplug it for 20 seconds. Then plug it in again and boot up Windows 10.

Your Virtualbox should be running now. If the green turtle still appears and the tell-tale lines are in the log, try all the steps again. If you don't get the standard virtualization icon, post back exactly what you did and we'll try to help some more.

For further info, see I have a 64bit host, but can't install 64bit guests and https://www.tenforums.com/tutorials/139 ... puter.html

OK thank you very much. I thought that couldn't be the problem because I'm running on Win10 Home which does not have Hyper-V natively but apparently, it was.

Sounds like you're running again, good!
Home has Hyper-V-based services, but not the ability to run a Hyper-V virtual machine. Pro & bigger have the services and the VM capability. The whole shebang interferes with Virtualbox.

scottgus1 wrote: Home has Hyper-V-based services, but not the ability to run a Hyper-V virtual machine.

I have to admit that was something I didn't know. I thought all Hyper-v related features were Pro (i.e. business centered) security functions. I thought all such features would be missing from "Home".