Hello List, I've latest ovirt Node on the Servers: ovirt-node-ng-4.4.9.3-0.20211215.0+1 and latest Engine 4.4.9 on CentOS Stream. When trying to run Windows 2019 Server installation from ISO with runOnce and Attach Windows Guest ISO Machine can not be started. If I remove Attach Windows Guest CD VM boots just fine. Workaround is to use VM Portal and change CD there when Windows Installer doesnt find any Disk. Latest Guest Tools ISO is installed on engine with using dnf install virtio-win in /usr /share/virtio-win I copied the Folder /usr/share/virtio-win from engine to every Node, but that also doesn't work. dnf search virtio-win on ovirt Node gives no results. What to do to get the VM with runOnce with Windows Guest Tools ISO attached to boot ? Why not let the User choose the ISO to use from the ISO Storage Domain when runOnce and Attach Windows Guest ISO is enabled ? Thanks Uli