virtualbox.org

Since yesterday all of my Windows Servers are broken. I constantly get the same Guru Meditation message. And I cannot fix this problem. The logs are in the zipfile.
Things I have tried:
1. Give more RAM to my machines: from 2048MB to 4096MB: no difference
2. Get a more recent version of my Windows Server 2019 ISO: no difference
3. Checked Virtual Box version & extension pack: Up-to-date
4. Fully deleted all files (.VirtualBox & VirtualBox VMs) & reinstalled Virtual Box and Extension pack: no difference
5. Check if I dont have any Hyper-V processes running in the background: Hyper-V is fully disabled

After doing all that, I still get the Guru Meditation notification, so I don't know what more I can do...
In the Zipfile are the logs of 2 Windows Server 2019 VMs

I'm running Virtual Box (6.1.16) on Windows (10)

I hope you can help me!

-Elias

[SOLVED]

I was scrolling through the forum and found this post which helped me fix it.
My problem was the same: I installed Ubuntu for Windows, and this must have interfered with my Virtual Box.
I opened my cmd prompt as administrator and put in these 2 commands: I can't yet post links on posts so I have put them in the file links.txt

Sorry for the sloppy work on the links.

-Elias

Good job on finding the solution!

For other readers, Hyper-V got enabled, likely by "Ubuntu for Windows". The link EliasAmeye posted was HMR3Init: Attempting fall back to NEM (Hyper-V is active), which is based off I have a 64bit host, but can't install 64bit guests.

No problem on the links.txt, Elias, that's expected for first day users.