When you try to start a VM, the error message has terminated unexpectedly during startup with exit code -1073741819 (0xc0000005). More details may be available
I've done all the steps taught here in the forum and nothing, I'm using Windows 8.1 64bits as a host.Failed to open a session for the virtual machine 01 - Course Linux Security Servers in Cloud → Firewall.
Result Code: E_FAIL (0x80004005)
Component: MachineWrap
Interface: IMachine {85cd948e-a71f-4289-281e-0ca7ad48cd89}