help with possible "hardening" problem on windows 10

[Paul M]

I'm having symtoms similar to what I see in the Howto: Diagnosing VirtualBox Hardening Issues page.
But I haven't been able to use that info to fix my problem.

I have Windows10 Enterprise version 1607 build 14393.953 and am running Virtualbox 5.1.18r114002 (Qt5.6.2)
I installed virtualbox as administrator, and I've started it as administrator. I've rebooted a few times too.

Yet after all that, I cannot start an image! I get this error message:
The virtual machine 'Oracle DB Developer VM 2017-03-02_12_38_53' has terminated unexpectedly during startup with exit code -1073741819 (0xc0000005).

Result Code: E_FAIL (0x80004005)
Component: MachineWrap
Interface: IMachine {b2547866-a0a1-4391-8b86-6952d82efaa0}

I've also attached the VBoxHardening.log file (zipped)

This machine has Windows Defender OFF; but it does have another protection program (CylancePROTECT) enabled.

Any help or advice is appreciated!

[socratis]

Cross referencing what you read in the Diagnosing VirtualBox Hardening Issues, your exit code is (the last line in your log):

1770.16a4: supR3HardNtChildWaitFor[1]: Quitting: ExitCode=0xc0000005 (rcNtWait=0x0, rcNt1=0x0, rcNt2=0x103, rcNt3=0x103, 62 ms, CloseEvents);

What does that mean? viewtopic.php?f=25&t=82106#p387191.
What are the candidates? Besides the standard Windows DLLs, I see:

1770.16a4: \SystemRoot\System32\drivers\cyprotectdrv64.sys:

which is the "Cylance Protect Driver". So try to 1) disable it, 2) uninstall it.

[Paul M]

I uninstalled Cylance and now I can start my VirtualBox image.

Thanks!

[socratis]

Thanks for reporting back and verifying the issue.