virtualbox.org

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

António Carvalho wrote: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.

«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...

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...

«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.

«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!

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

António Carvalho wrote: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].