Carbon Black Cloud: Server crash on 3.9.0.2357

Products

• Carbon Black Cloud Endpoint Standard (formerly Cb Defense)
• Carbon Black Cloud Enterprise EDR (formerly Cb Threathunter)

Issue/Introduction

• Crash (Blue Screen) on server\s 
• Fault code shows module as:

AV_ctifile

Environment

• Carbon Black Cloud Sensor: 3.9.0.2357
• Microsoft Windows Server

Cause

Investigation into this issue is in progress. This has been designated internally as DSEN-22731

Resolution

• For 3.9.0.2357 a workaround has been applied globally and should prevent further issues.
• Resolved in Build 3.9.1.2417+ 

Additional Information

Engineering pushed out the config update from the backend for all orgs week of 1/16/23 before resume the deployment by using some gating mechanism so it only applies to 3.9.0.2357.
Let us know if you do have any BSOD's. Please open a case with Carbon Black support, uploading a memory dump of one of the crashes.