suddenly all windows guests stopped working

[xorred]

I run Windows 10, 2004, Virtualbox 6.1.14 (latest).

All my VMs worked just fine till today - when suddenly all Windows VMs stopped working (they start up, but when reaching the login screen, they hang).

Linux VMs work perfectly fine. Any ideas how to troubleshoot this further?

https://pastebin.com/yrVTn3vx - the log of one of the machines. Update: after a few reboots, they started 'booting' - and the login process takes... approx 5 minutes, vs 1 second as it should have. After login, when you click somewhere, the reaction appears in a few minutes.



This screen appears for minutes before the login prompt, too.

I tried uninstalling and reinstalling Virtualbox along with its extensions - no dice.

Edit: SOLVED
It was the Windows 10 Sandbox feature. Removed it and voila, all works fine...

[sepavel]

https://docs.microsoft.com/en-us/troubl ... th-hyper-v

[scottgus1]

xorred, forum gurus won't go to 3rd-party sites for logs and images that can be posted using the forum's Upload Attachment tab.

The Windows 10 Sandbox feature uses Hyper-V, which sometimes blocks Virtualbox.

Glad you're up and running!