VM and Host freezing totally

Discussions related to using VirtualBox on Windows hosts.
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bombaglad
Posts: 2
Joined: 22. Nov 2020, 00:26

VM and Host freezing totally

Post by bombaglad »

Hi,

I'm running the official Nextcloud VM (latest Ubuntu LTS) on my Windows 10 LTSC host. Ever since first installation, the VM crashes the host seemingly randomly during times of high I/O (large file transfers between VM and host over network). The crash occurs in a really weird way - the whole host completely freezes up, showing a constant image of what was last on the display before the crash. No pings, no way to get it runnung again, the only way to get out of it is to force reboot the host via the power button.

Here are the logs from VirtualBox:
logs.zip
(36.81 KiB) Downloaded 6 times
Is there anything unusual there? I don't think it's VM-related as I used the official Nextcloud image which is well maintained for this, but any help or suggestions would be greatly appreciated.

Thanks!
scottgus1
Site Moderator
Posts: 20945
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Windows, Linux

Re: VM and Host freezing totally

Post by scottgus1 »

Hyper-V is enabled and might be interfering. See HMR3Init: Attempting fall back to NEM (Hyper-V is active). Try the VM again after you get Hyper-V disabled.
bombaglad
Posts: 2
Joined: 22. Nov 2020, 00:26

Re: VM and Host freezing totally

Post by bombaglad »

Disabling Hyper-V (turning the Windows feature off and rebooting the host) seems to have done the trick, thanks a lot!
scottgus1
Site Moderator
Posts: 20945
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Windows, Linux

Re: VM and Host freezing totally

Post by scottgus1 »

Great! Glad you're up and running.
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