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All VMs fail to open

Posted: 6. Jan 2021, 21:10
by acer1234
All my VMs are crashing with the following error. Any ideas why this is happening and how to fix it? I attached the VBoxHardening.log. I tried updating virtualbox to the latest version and that didn't fix it.

Failed to open a session for the virtual machine [machine name].

The virtual machine '[machine name]' has terminated unexpectedly during startup with exit code -1073741819 (0xc0000005). More details may be available in 'C:\Users\[user]\VirtualBox VMs\[machine name]\Logs\VBoxHardening.log'.

Result Code: E_FAIL (0x80004005)
Component: MachineWrap
Interface: IMachine {85632c68-b5bb-4316-a900-5eb28d3413df}

Re: All VMs fail to open

Posted: 6. Jan 2021, 23:49
by scottgus1
See Diagnosing VirtualBox Hardening Issues.

You have something called SentinelOne or Sentinel Agent running, and somethin is hacking your Windows DLL's.

Uninstall (not just disable) all antivirus and antimalware, Let Windows 10 Defender handle AV for a bit. Reboot, and try Virtualbox again.