All VMs fail to open

Discussions related to using VirtualBox on Windows hosts.
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acer1234
Posts: 1
Joined: 6. Jan 2021, 21:02

All VMs fail to open

Post 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}
Attachments
VBoxHardening.log
(40.12 KiB) Downloaded 53 times
scottgus1
Site Moderator
Posts: 20945
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Windows, Linux

Re: All VMs fail to open

Post 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.
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