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
This would be the easiest way.
1) go and download the Device Guard and Credential Guard hardware readiness tool here- https://www.microsoft.com/en-us/download/details.aspx?id=53337
2) Find the folder path of "DG_Readiness_Tool_v3.5.ps1" of downloaded content and run the below command after enable Powershell "unrestricted". "./DG_Readiness_Tool_v3.5.ps1 -Disable -AutoReboot"
3) When rebooting the machine press F3 to confirm to disable the features