id summary reporter owner description type status component version resolution keywords cc guest host 6153 Vista guest, DWM crashes in 3.1.2 Ken Hagan "Since upgrading from 3.1.0 to 3.1.2, both my Windows Vista VMs have been broken. They boot up fine, but when you log in (any user) they just hang. The host CPU sticks at 50% usage (it's a 2 core chip). The workaround was to boot into safe mode and disable the Desktop Window Manager service, then reboot the guest. Having done that, I can log in and discover from the event log that DWM.EXE (6.0.6002.18005) has crashed in VBoxOGLpackspu.dll (3.1.2.0) at offset 0x00011102 with exception code 0xC0000005. Both the host (Windows Server 2003) and the guest are fully patched." defect closed other VirtualBox 3.1.2 fixed Windows Windows