id summary reporter owner description type status component version resolution keywords cc guest host 8600 GUI: all VMs became invisible Technologov "Host: Windows 7, x64, VBox 4.0.4 I have same set of VMs, and somehow they all became invisible in the GUI, possibly as a result of data corruption of either ""VirtualBox.xml"" or of some VMs. All existing VMs are registered, but invisible via GUI. All new VMs created instantly become instantly invisible via GUI as well. They are accessible from ""VBoxManage"", so I can list VMs and even start VMs. -Technologov, 21.03.2011." defect closed GUI VirtualBox 4.0.4 obsolete other Windows