virtualbox.org

Failed to open a session for the virtual machine windows_2-64 .

VT-x is not available (VERR_VMX_NO_VMX).

Result Code: E_FAIL (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

VirtualBox can only use VT-x if it is enabled in the host's BIOS and if no other program is using it.

There is a topic covering this at the top of this forum.