As nested vms have been disabled by default in 6.3 due to the issue with avast and windows vms when enabled. I have made 2 scripts to turn it on and off. In script set cpu type 1 for intel 2 for amd. Download link for both scripts https://www.dropbox.com/s/0b1tvotvl6y80uy/nested vms scripts.zip?dl=0   nested vm on script #!/bin/bash #set whether your cpu is Intel or AMD [1-Intel] [2-Amd] cputype="1" #Do not edit below this line #turn nested on if [[ "$cputype" =~ ^