[Resolved] Windows 10 (1803) stop working after starting a virtualmachine

[António Carvalho]

Hello,

I Have a Windows 10 Enterprise 64bit (version 1803, build 17134.48), and Virtualbox 5.2.10 r122046 (Qt. 5.6.2).
I don't know if some one has experienced the same thing, but after the last windows update (to my current version), everytime I start a virtual machine (that were previously working well), the OS freezes and I need to restart my laptop with a cold reboot.

I haven't experienced other issues in any other application, except for Virtualbox.

Has any one a sugestion for me to try?
Many thanks in advance,

António Carvalho

[socratis]

Has any one a sugestion for me to try?

Uninstall VirutalBox. Reboot. Re-install VirtualBox.
Your VMs and your preferences are going to be unharmed, don't worry.

[António Carvalho]

«Uninstall VirutalBox. Reboot. Re-install VirtualBox.»

I have done all those, in that exact order. Still not working. It crashes as soon as I start the virtual machine...

[socratis]

1. Can you try with 5.2.12 that was just released?
2. I wish I could easily identify what's installed on your system and see what might be conflicting. Can you try both of those commands from PowerShell?
   

   • Code: Select all

     Get-WmiObject -Class Win32_Product | Select-Object -Property Name
     
     Get-ItemProperty HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\* | Select-Object DisplayName, DisplayVersion, Publisher, InstallDate | Format-Table –AutoSize
     

NOTE: You may not be able to see the whole second line as a single line, make it one line in PowerShell...

[António Carvalho]

«I wish I could easily identify what's installed on your system and see what might be conflicting. Can you try both of those commands from PowerShell?»

Please check the files that I have attached: Out1.txt for the first command, and out2.txt for the second one (I had to zip them).

«Can you try with 5.2.12 that was just released?»
I have not tried it. As soon as I try, I'll post the result.

[António Carvalho]

«Can you try with 5.2.12 that was just released?»

Just tried it. I have uninstalled the 5.2.10, rebooted, installed the 5.2.12, reboot again, and the same behaviour. Full SO stop!

[António Carvalho]

Hello,

I've found the solution, and I'm sharing it now!

It seems to be related to "Credential Guard and Virtualization Based Security", as I've found in this post on stackoverflow:
https://stackoverflow.com/questions/389 ... ary-update

I was wondering, why the Android Studio was reporting to have Hyper-V enabled, when I "knewed" that it was disabled! So, I guessed that the same problem could be making the Virtualbox to crash my laptop. And it was!

I now have all my machines back!

António Carvalho

[socratis]

It seems to be related to "Credential Guard and Virtualization Based Security", as I've found in this post on stackoverflow

Actually, we have a FAQ here too, "I have a 64bit host, but can't install 64bit guests", which describes the potential culprits that could be stealing your VT-x/AMD-V. In the Additional Notes, part 2, it's the Credential Guard.

Your computer was freezing, that's why I didn't immediately pointed you to the FAQ, it wasn't one of the usually described symptoms. Maybe things have changed. I'll remember that...

Thank you very much for the feedback! Marking as [Resolved].