id summary reporter owner description type status component version resolution keywords cc guest host 10474 Windows 7 Ultimate x64 Crashing Under VirutalBox 4.1.12 Stewart Berman "Host: Windows 7 Ultimate x64 with all important patches VirtualBox 4.1.12 Guest: Windows 7 Ultimate x64 with all important patches I stayed on VirtualBox 3.0.10 for a long time because all of my VMs were stable under it. (I tried 3.0.12 but the VMs kept crashing.) I upgraded to 4.1.12 and my VMs crash when left running. I have attached the log files that cover the period of the latest crash and an analysis of the MEMORY.DMP file that windows produces." defect closed other VirtualBox 4.1.12 obsolete BugCheck Windows Windows