id summary reporter owner description type status component version resolution keywords cc guest host 9548 start of VM fails with NS_ERROR_FAILURE (0x80004005) Jens "I am successfully running a instance of VirtualBox 4.0.12 on Ubuntu Server 10.04.3 LTS with a Windows 2000 VM. Now I created a VM for Windows XP. The startup of the VM fails with this messages: Waiting for the VM to power on... VBoxManage: error: The virtual machine 'winxp' has terminated unexpectedly during startup with exit code 0 VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component Machine, interface IMachine, callee " defect closed other VirtualBox 4.0.12 obsolete other Linux