Hash Sum mismatch, downloads all fail... since Win10 2004 update

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I solved my problem, it was the Windows 10 Core Isolation feature, it was turned on for some reason.

It is nice to have the Windows 10 OS lookout for potential shenanigans
but if the safety settings “brick” other applications like VirtualBox, I just say WTF.

I hope this will help any other Windows 10 people, if there are any still remaining.

+++++

Notice: Reboot the PC when ever it displays a reboot suggestion.

  1. BIOS// Verify BIOS that SMV was enabled.
    CPU CONFIG tab / select SMV MODE / set it to ENABLE.

  2. Boot PC Windows 10.

  3. Win10// searchbar “Windows Features On Off” // open it //
    uncheck [ ] Virtual Machine Platform
    uncheck [ ] Windows Hypervisor Platform
    !-- I hope this doesn’t mess something else up --!

  4. Win10// searchbar “cmd” prompt, with admin powers: bcdedit /set hypervisorlaunchtype off
    [if you want to later enable it… bcdedit /set hypervisorlaunchtype auto].

  5. Win10// searchbar “Core Isolation” // open it // Memory integrity = off.

After all the changes and verifications above, and PC rebooting, launch VirtualBox and
run Whonix Gateway first, I always change the time in the tray first. Next
bring up terminal, sudo apt-get update && sudo apt-get dist-upgrade
and it will install without ‘Hash Sum mismatch’ and will download files without failing.

Then run Whonix Workstation, I always change the time in the tray first.
Next bring up terminal, sudo apt-get update && sudo apt-get dist-upgrade
and it will install without ‘Hash Sum mismatch’ and will download files without failing.

Run TOR webrowser and it will download/update without failed download message.

End of story

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