The patch for QEMU that has been mentioned in comment #38 has been merged already, so I'm marking this as Fix-Released there.
** Changed in: qemu Status: New => Fix Released -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1915063 Title: Windows 10 wil not install using qemu-system-x86_64 Status in QEMU: Fix Released Status in linux package in Ubuntu: Confirmed Status in linux-oem-5.10 package in Ubuntu: Fix Released Status in linux-oem-5.6 package in Ubuntu: Confirmed Status in qemu package in Ubuntu: Invalid Bug description: 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 --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.14 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistributionChannelDescriptor: # This is the distribution channel descriptor for the OEM CDs # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-sutton-focal-amd64-20201030-422+pc-sutton-bachman-focal-amd64+X00 DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2021-01-20 (19 days ago) InstallationMedia: Ubuntu 20.04 "Focal" - Build amd64 LIVE Binary 20201030-14:39 MachineType: LENOVO 30E102Z NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.6.0-1042-oem root=UUID=389cd165-fc52-4814-b837-a1090b9c2387 ro locale=en_US quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.6.0-1042.46-oem 5.6.19 RelatedPackageVersions: linux-restricted-modules-5.6.0-1042-oem N/A linux-backports-modules-5.6.0-1042-oem N/A linux-firmware 1.187.8 RfKill: Tags: focal Uname: Linux 5.6.0-1042-oem x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip docker kvm libvirt lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 07/29/2020 dmi.bios.vendor: LENOVO dmi.bios.version: S07KT08A dmi.board.name: 1046 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.type: 3 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrS07KT08A:bd07/29/2020:svnLENOVO:pn30E102Z:pvrThinkStationP620:rvnLENOVO:rn1046:rvrNotDefined:cvnLENOVO:ct3:cvrNone: dmi.product.family: INVALID dmi.product.name: 30E102Z dmi.product.sku: LENOVO_MT_30E1_BU_Think_FM_ThinkStation P620 dmi.product.version: ThinkStation P620 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1915063/+subscriptions