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, the problem was with the specific box I was trying to use ubuntu/xenial64, I just had to switch to centos/7 and all those errors disappeared.
Hope this helps someone.