id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 16015,All VMs crash on macOS 10.12 with NS_ERROR_FAILURE (0x80004005),JackMacWindows,,"Hello, Whenever I launch any of my VMs on macOS 10.12, the VM crashes immediately with NS_ERROR_FAILURE (0x80004005). The whole error given by VirtualBox: Failed to open a session for the virtual machine OS X Install Test. The virtual machine 'OS X Install Test' has terminated unexpectedly during startup with exit code 1 (0x1). Result Code: NS_ERROR_FAILURE (0x80004005) Component: MachineWrap Interface: IMachine {b2547866-a0a1-4391-8b86-6952d82efaa0} No VBox.log file is made, but a Crash Reporter log is given, which I have attached. It mentioned ""Illegal Instruction: 4"" and ""BUG IN CLIENT OF LIBDISPATCH: _dispatch_main_queue_callback_4CF called from the wrong thread"". Jack",defect,new,other,VirtualBox 5.1.6,,,,all,Mac OS X