Looking through old bug tickets... can you still reproduce this issue with the latest version of QEMU? Or could we close this ticket nowadays?
** Changed in: qemu Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1487264 Title: Windows 8.1/10 Crashes during upgrade - SYSTEM_THREAD_EXCEPTION_NOT_HANDLED Status in QEMU: Incomplete Bug description: Ever since Windows 8.x, 10 I cannot upgrade or upgrade to tech builds within Windows 10 without hard shutting off the VM. Physical hardware: Intel(R) Core(TM) i7-4910MQ CPU @ 2.90GHz [Haswell] QEMU 2.1-2.3.x seem all broken, I am using Q35 chipset w/ BIOS mode. Launch command via virt-manager/libvirt launch: QEMU_AUDIO_DRV=spice /usr/bin/qemu-kvm -name Windows_10 -S -machine pc-q35-2.3,accel=kvm,usb=off -cpu Haswell- noTSX,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff -m 4096 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid ed7e372b- ebf9-4feb-a305-869f82e6aaee -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/Windows_10.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot menu=off,strict=on -device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e -device pci- bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 -device ich9-usb- ehci1,id=usb,bus=pci.2,addr=0x3.0x7 -device ich9-usb- uhci1,masterbus=usb.0,firstport=0,bus=pci.2,multifunction=on,addr=0x3 -device ich9-usb- uhci2,masterbus=usb.0,firstport=2,bus=pci.2,addr=0x3.0x1 -device ich9 -usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.2,addr=0x3.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.2,addr=0x4 -drive file=/var/lib/libvirt/images/Windows_10.qcow2,if=none,id=drive- sata0-0-0,format=qcow2 -device ide-hd,bus=ide.0,drive=drive- sata0-0-0,id=sata0-0-0,bootindex=1 -drive file=/usr/share/virtio-win /virtio-win-0.1.109.iso,if=none,media=cdrom,id=drive- sata0-0-1,readonly=on,format=raw -device ide-cd,bus=ide.1,drive=drive- sata0-0-1,id=sata0-0-1 -netdev tap,fd=22,id=hostnet0,vhost=on,vhostfd=23 -device virtio-net- pci,netdev=hostnet0,id=net0,mac=52:54:00:54:14:20,bus=pci.2,addr=0x1 -chardev pty,id=charserial0 -device isa- serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus =virtio- serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -device usb-tablet,id=input0 -spice port=5900,addr=127.0.0.1,disable- ticketing,image-compression=off,seamless-migration=on -device qxl- vga,id=video0,ram_size=268435456,vram_size=268435456,vgamem_mb=256,bus=pcie.0,addr=0x1 -device ich9-intel-hda,id=sound0,bus=pci.2,addr=0x2 -device hda- duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device usb- host,hostbus=1,hostaddr=2,id=hostdev0 -device virtio-balloon- pci,id=balloon0,bus=pci.2,addr=0x5 -msg timestamp=on The workaround I've been able to come up with is to set boot menu in virt-manager, then put in a bootable CD so I have enough time to hard power off the QEMU/KVM instance, when I power it back on, it continues upgrade/install without issue, each time it needs to restart however I go though same exercise. Anything known about this issue? The workaround is a kludge, but it does get it to upgrade/install Windows 8.1, and upgrade between Windows 10 X builds. Thanks, Shawn To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1487264/+subscriptions