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A critical error has occurred while running the virtual machine
Posted: 24. Jul 2020, 01:37
by Erromb
Hello everyone, Could anybody help me?
when i run the virtual marchine, it throws a message "A critical error has occurred while running the virtual machine..."
[attachment=]Vbox.zip[/attachment]
What should i do?
Re: A critical error has occurred while running the virtual machine
Posted: 24. Jul 2020, 01:49
by scottgus1
Try that attachment again?
Re: A critical error has occurred while running the virtual machine
Posted: 24. Jul 2020, 02:55
by Erromb
This is the first time i use this code, i just know how to upload images. i could use some help, i would appreciate it. i found that the code is right, but the idfile is not.
Re: A critical error has occurred while running the virtual machine
Posted: 24. Jul 2020, 03:31
by scottgus1
Under the Upload Attachment tab, below where you type posts, click the Choose File button.
Browse to and select the zip file, click Open.
Click Add the File.
The web page will reload with a Posted Attachments box above the Upload Attachment tab.
Inside Posted Attachments, your file will be displayed, with a Place Inline button. Click Place Inline.
Click Submit.
Re: A critical error has occurred while running the virtual machine
Posted: 24. Jul 2020, 03:42
by Erromb
Finally =)
Thank you very much
Re: A critical error has occurred while running the virtual machine
Posted: 24. Jul 2020, 04:07
by scottgus1
Your log contains these lines:
{timestamp} HM: HMR3Init: Attempting fall back to NEM: AMD-V is not available
{timestamp} NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...
You might notice in the guest window's Status Bar the green turtle:

The choice of animal is appropriate: Your guest is running, just really slow. Or it might guru-meditate. This is because a service that uses Microsoft Hyper-V is running on your host PC. Normally Hyper-V blocks Virtualbox. But your PC is of the type and OS where Virtualbox can attempt to run the guest using the Hyper-V engine. This arrangement is still being developed and isn't 100% yet.
If VirtualBox is running without Hyper-V enabled, and nothing else is interfering with hardware virtualization (VT-x / AMD-V), then the usual virtualization icon (

) will be seen in the Status Bar.
To turn Hyper-V off completely, do this:
1. Shut down all programs. You will have to reboot your host.
2. See
I have a 64bit host, but can't install 64bit guests. This tutorial has a couple more things to look for in step 2. Be sure these are all turned off.
3. Find the Command Prompt icon, right click it and choose Run As Administrator.
4. Enter this command:
bcdedit /set hypervisorlaunchtype off
5. Enter this command:
shutdown -s -t 2
6. When the computer turns off, unplug it for 20 seconds. Then plug it in again and boot up Windows 10.
If your Virtualbox does not start successfully, zip and post another vbox.log. For further info, see
https://www.tenforums.com/tutorials/139 ... puter.html
Re: A critical error has occurred while running the virtual machine
Posted: 24. Jul 2020, 05:23
by Erromb
It totally worked, thank you very much for your patience and knowledge.
Just one more thing, is there something wrong if i just pick VBoxVGA?.
i know that VmsVGA is the suggested.
Thank you again =)
Re: A critical error has occurred while running the virtual machine
Posted: 24. Jul 2020, 10:44
by mpack
Please stick to the options selected by the template, until you have enough experience to argue with the guy who created it...
One exception: RAM. The templates are always conservative with RAM since they have no idea what your host can afford. In your case you can afford more. I suggest 2048MB RAM, and also 128MB graphics RAM (16MB is certainly not enough).