The VM session was closed before any attempt to power it on.

session was closed before any attempt to power it on."/>

The VM session was closed before any attempt to power it on.

相信大家使用virtualbox的时候都遇到过这个问题：

The VM session was closed before any attempt to power it on.

返回 代码: 
E_FAIL (0x80004005)
组件: 
SessionMachine
界面: 
ISession {c0447716-ff5a-4795-b57a-ecd5fffa18a4}

原因是当前登录用户没有操作该文件夹的权限。解决办法：在该虚拟机的文件夹上右键-属性-安全-组或用户名，选择当前登录用户，勾选所有权限即可。（有的不能勾选，不用勾选也没事）。