Hi Andrea, Thank you for your help, The above issues are addressed while reinstalling libvirt 4.0.0. Currently, I could create a VMs on libvirt. I have another issue while configuring/editing win10.xml file. After edit or insert of few lines in win10.XML file using virsh i.e at /etc/libvirt/qem$ virsh edit win10

I am getting a below error. @ubuntu-kvm3:/etc/libvirt/qemu$ virsh edit win10 error: internal error: Child process (LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin /usr/local/bin/qemu-system-x86_64 -help) unexpected exit status 126: libvirt: error : cannot execute binary /usr/local/bin/qemu-system-x86_64: Permission denied I understand that this could be the problem of AppArmor security feature it doesn't allow new binary such as (qemu-system-x86_64) to execute Later I have followed the below link to address [ https://www.reddit.com/r/VFIO/comments/9pi2cd/how_to_set_up_qemu_30_on_ub... 6. Create AppArmor rules so libvirt can use the binary ] here i have added few lines in 2 files as per the procedure. later when i restart apparmor I got the below error