Virtual Machine dosen´t boot

Discussions related to using VirtualBox on Windows hosts.
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AndreDias
Posts: 2
Joined: 20. Mar 2021, 13:19
Primary OS: MS Windows 10
VBox Version: OSE other
Guest OSses: CentOS8

Virtual Machine dosen´t boot

Post by AndreDias »

Hello guys,

From yesterday none of my machines start. I unnistall the updates that i have made, but still nothing.
Linux machines freeze on boot.
I haven hyper-v activate in win10 features and enable on BIOS.
I have 20H2 win10 build

I try to downgrade the version of virtual box to 6.0.24 but dosen´t help.
I have installed 6.1.18 version of vbox.

What can i do?
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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: Virtual Machine dosen´t boot

Post by scottgus1 »

Hyper-V often disrupts Virtualbox. Please right-click the guest in the main Virtualbox window's guest list, choose Show Log.

Search the far left tab's log for this text:

Attempting fall back to NEM

If you find it, Hyper-V is enabled. See HMR3Init: Attempting fall back to NEM (Hyper-V is active).

If you don't find that text, save the far left tab's log, zip the log file, and post the zip file, using the forum's Upload Attachment tab.
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