VM intermittently freezing

[Sooz C]

Virtual Box Version 6.1.22 r144080 (Qt5.6.2)

Operating System = Windows 10 (OS Build 19042.1052)

VM simulating operating system = XP

Works fine for a while then freezes when repeating the same action that had worked fine just before.

Only way to get it to unfreeze is to Close down application completely.

Had been working on Lotus spreadsheet when it freezes. Have had 6 freezes in 2 days.

All worked perfectly 2 versions ago, but see no way to go back to an earlier version. Started having the problem previous version and updated to this version since it was causing the same problem.

[Bulldog1024]

I have an AMD 12 core / 24 threads, 32GB RAM with 7 VMs. Host Win 10 and VMs Win 10 / 11. Usually running 1 - 3 VMs simultaneously. I’ve been having VMs freeze in various ways but getting worse since getting my latest system.

VM freezes looked like:

• total freeze, no mouse or KB response
• KB worked and could navigate with ALT TAB but mouse didn’t work.
• mouse cursor could move and would highlight things like X or - in upper right corner. But mouse clicks did NOT work.

Clicking File / Close in the VM window and then Cancel ( cancel the shutdown ) would get the mouse ( and KB ) working again. Sometimes for seconds and sometimes for minutes. Other times it was File / Close and the clicking OK to shut the VM down.

I tried allocating the full VM memory by adding a <ExtraDataItem name=“VBoxInternal/RamPreAlloc” value=“1”/ command to the .vbox file. That seemed to help a bit.

However the long term fix was shutting down everything to do with Hyper-V. In this link : ​https://petri.com/how-to-disable-hyper-v-completely-in-windows-10 I used the Windows Features On and Off and then the BCDEDIT Attlee bottom.

[Bulldog1024]

I used the Windows Features On and Off and then the BCDEDIT at the bottom. Those 2 things disabled enough of Hyper-V that after 10 hours and 6 VMs running, nothing has frozen.