issues:
Failed to open a session for the virtual machine ubuntu.
Raw-mode is unavailable courtesy of Hyper-V. (VERR_SUPDRV_NO_RAW_MODE_HYPER_V_ROOT).
Resul
In my case, was the Docker that cause problems:
1) Run below command in powershell with admin mode:
Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V -All
2) run below command in command prompt with admin mode:
bcdedit /set hypervisorlaunchtype off
3) disabled Hyper-V: Control Panel\Programs\Programs and Features\
4) VMBox memory made it to: 3155 MB (VMbox->settings->system)
VM box Acceleration is deactivated. How do activate this? and fix above error?
Restart your system.
To check the status of Hyper-v in Windows 10,
right click <"start"> → Run → OptionalFeatures.exe, → look for the "Hyper-V" option.
The box should be empty, not checked or shaded.
Make sure to fully power down and reboot the host after changing the Hyper-v setting.
PS
Docker known for activating this "Hyper-V" without asking for user opinion and then Oracle VirtualBox does not want to work.
As in the docs, if you are on windows you can use hyperv drivers.
Docker for Windows - You can use
docker-machine
create with thehyperv
driver to create additional local machines.
For me the combination of the following three was the solution:
1. control panel > turn windows features on or offf > Hyper-V : deselect
2. admin cmd > bcdedit > hypervisorlaunchtype:Auto disabling: bcdedit /set hypervisorlaunchtype off
3. gpedit.msc > 'Computer configuration > Administrative Template > Device Guard' > Turn On Virtualization Based Security : Change from 'Not configured' to 'Disabled'
REBOOT
note: after the reboot the VirtualBox worked, but Docker Desktop's VirtualBox started complaining about missing Hyper-V !
It seems that this might have been the root of all my evil... Extra info: https://forums.docker.com/t/running-docker-and-virtualbox-on-the-same-machine/23578/13
i had same problem guys
virtual box was running smoothly on my windows machine but when new update came virtual started giving me this error and believe me guys just a little S%$& thing fixed it
in my case this problem fixed just by installing windows extension pack that's it