id summary reporter owner description type status component version resolution keywords cc guest host 8095 virtual machine inaccessible remibemol "I had installed ubuntu natty on a machine I didn't changed anything, as far I remember. Now I got a message for that that the machine is inaccessible. It's not possible to edit the configuration, then I can't correct anything. In the Virtual media manager, everthing look ok, no error message. I got this message: The selected virtual machine is inaccessible. Please inspect error message shown below and press Refresh button if you want to repeat the accessibility check: {{{ Could not find an open hard disk with UUID {3728e3b5-7f16-49dc-b1c1-b141c29125f5}. Result Code: VBOX_E_OBJECT_NOT_FOUND (0x80BB0001) Component: VirtualBox Interface: IVirtualBox {d2de270c-1d4b-4c9e-843f-bbb9b47269ff} }}} in the Virtual media manager there is nothing with this number (d2de270c-...) I had several snapshots... I attach a screenshot and the xml file..." defect closed other VirtualBox 4.0.0 fixed other Linux