Windows 10 wil not install using qemu-system-x86_64 Steps to reproduce install virt-manager and ovmf if nopt already there copy windows and virtio iso files to /var/lib/libvirt/images Use virt-manager from local machine to create your VMs with the disk, CPUs and memory required Select customize configuration then select OVMF(UEFI) instead of seabios set first CDROM to the windows installation iso (enable in boot options) add a second CDROM and load with the virtio iso change spice display to VNC Always get a security error from windows and it fails to launch the installer (works on RHEL and Fedora) I tried updating the qemu version from Focals 4.2 to Groovy 5.0 which was of no help