BSOD at Windows 10 User Login (Kernel Security Check failure)

UnknownAd · 17 May 2017

Hello,

I have PCs with Windows 10 1607 and 1703 in a Domain and I get sometimes BSODs at the Windows Login. (Kernel Security Check Failure) The PCs also get Group Policies. After a restart or sometimes more I can log in. The BSOD also appears after a new Windows 10 Installation. (Driver installation, mount into the Domain)

Edit: I think the BSOD is caused by our Sophos Anti-Virus programm (Sophos Endpoint Security and Control, Version 10.7). Can someone confirm it?
Thank you in advance.

philc43 · 20 May 2017

Hello,

It would appear that you are right. The analysis shows:

Code:

BugCheck 139, {3, ffff8981ef6df230, ffff8981ef6df188, 0}

*** WARNING: Unable to verify timestamp for lcencvm.sys
*** ERROR: Module load completed but symbols could not be loaded for lcencvm.sys

This is a Sophos product so I would recommend uninstalling it to see if it helps.

UnknownAd · 23 May 2017

Thank you for your response.

We have removed another Sophos product (Safeguard Lancrypt). Our Antivirus programm is still installed.
I post in two weeks or so a status update, if it fixed our issue or not.

UnknownAd · 17 Jul 2017

The Problem was Lancrypt.

philc43 · 17 Jul 2017

Thanks for the feedback and pleased you have solved it! :)