Be part of JetBrains PHPverse 2026 on June 9 – a free online event bringing PHP devs worldwide together.

HUGE_DICK_10_INCHES's avatar

Virtual box - error on starting machine (failed to open a session for virtual machine "m1")

Failed to open a session for the virtual machine centos.

The virtual machine 'centos' has terminated unexpectedly during startup with exit code 1 (0x1).  More details may be available in 'C:\Users\ME\VirtualBox VMs\centos\Logs\VBoxHardening.log'.

Result Code: E_FAIL (0x80004005)
Component: MachineWrap
Interface: IMachine {85cd948e-a71f-4289-281e-0ca7ad48cd89}

VBoxHardening.log file has 2k+ lines where I don't understand a thing...

I enabled virtualization in bios..

0 likes
4 replies
36864's avatar

Delete the log file, attempt to load the VM once, and then post the newly-generated log file.

36864's avatar

Found a few stackoverflow posts. Most call for a reboot or reinstallation of virtualbox, or running the program as administrator.

Have you tried all of those?

Please or to participate in this conversation.