Markus ... I'm not sure what I'm missing here ... for me the virtual box instance of Windows fails immediately after the progress bar ... whether I use or don't use ibt=off ... am I awaiting a new virtual box in the Suse repos? At the moment my system is: 13th Gen Intel® Core™ i9-13900HX, Tumbleweed 6.4.8-1-default (64-bit), KDE 5.27.7, Wayland and VirtualBox 7.0.10-1.1-x86 from OpenSuse (and openSuse-Tumbleweed-Oss has the same version)