Windows 10: Windows 10 32-bit Oct 2020 Update fails on VirtualBox

So, I have downloaded the Windows 10 32-bit ISO from here, and I am trying to set a Virtual Machine so I can use WoR Windows on Raspberry Pi, but the tool requires Windows 10 so I have to use a Virtual Machine since I do not have access to an actual PC. So I tried to set it up in Oracle VirtualBox, and Windows 10 looks like this:


I'm very limited on storage, so Windows 32-bit doesn't work on my computer as hard. But I tried setting up this multiple times and I get the same result.

:)

 

VirtualBox in Windows 10 64-bit guest only shows 32-bit options

My Situation

I am running VirtualBox v5.2.32 on an Ubuntu 18.04 host. I have created a Windows 10 (64-bit) guest. I installed VirtualBox v6.0.10 in the Windows 10 guest (Windows 10 Pro - v1903 - 64-bit). I am trying to create an Ubuntu (64-bit) guest inside the Windows 10 guest. I only see 32-bit options inside the Windows guest. After several attempts to resolve this, I am still only seeing 32-bit options.

My Intention

The purpose for creating a VM inside a VM is to be able to ensure that VirtualBox is working so that I can test Vagrant configuration inside a Windows 10 environment. Our Vagrant config is using 64-bit base images, so I need to be able set up 64-bit guests inside this Windows 10 guest.

What I Have Already Tried

...on the Ubuntu Host

I have checked Enable VT-x/AMD-V on the System > Acceleration tab in the Ubuntu host's VirtualBox config for the Windows 10 guest machine.

...on the Windows Guest

In the Windows guest machine, I can see that the host's physical CPU details are passed through in Settings > System > About and it shows as a "64-bit operating system, x64-based processor".

This is a vanilla Windows 10 Pro installation, no additional software (i.e., no addon virus protection software).

I inspected Windows Features to ensure that the following are not checked:

• Guarded Host
  
• Hyper V
  
• Virtual Machine Platform
  
• windows Hypervisor Platform
  
• Windows Subsystem for Linux
  

...because my googleing seems to indicate that some or all of these might be an issue.

Based on a VirtualBox forum (I have a 64bit host, but can't install 64bit guests), using gpedit.msc, I set Local Computer Policy > Computer Configuration > Administrative Templates > System > Device Guard > Turn on Virtualization Based Security to Disabled. I also check that Windows Security > Device Security > Core Isolation Details is set to Off.

I have "repaired" the VirtualBox installation. I have uninstalled VirtualBox, rebooted, reinstalled, and then rebooted again.

Related Stack Exchange Questions and Other References

I looked at these related, previously asked questions and followed their suggestions as indicated in the steps above. Everything I am finding seems to be related to a Windows 64-bit host running directly on the host machine, not dealing with a Windows host which is itself a guest VM.

• Why does virtualbox only have 32-bit option, no 64-bit option on Windows 7?
  
• VirtualBox only allowing 32 bit OS
  
• Windows 10 (64 bit) is only showing 32 bit options and not 64 bit options
  
• Why is VirtualBox only showing 32-bit guest versions on my 64-bit host OS?
  
• VirtualBox only showing 32-bit and no 64-bit versions (easy fix)
  

 

VirtualBox only allowing 32 bit OS

When I start VirtualBox, I only have 32 bit operating systems available. After some research I followed the steps on another post but to no avail. My host OS is 64 bit, Intel Virtualization Technology and VT-d are both enabled in the BIOS, and Hyper-V platform is disabled in the Windows Feature list, yet I still only am presented 32 bit operating systems.

I find these same instructions many places and they seem to solve the problem for everyone, but not for me.

I also tried repairing the installation without luck. How can I fix this to run a 64 bit Linux OS in VB?

EDIT I also have the latest version of BIOS.

 

32 bit vs. 64 bit updates

Win. 10 Home 'Laptop' Dell

OS Build: 14292.1358

Version 1607

No error, ,just says updates failed on all the 32 bit ones when looking at Windows update history.Don't see any 64

updates in list.