If you ever saw System process (ntoskrnl.exe) pegging a CPU core at 100% after installing certain security updates, this was your culprit. KB4023814 corrected an inefficient loop in the WFP, which manages firewall and IPsec policies. This was a lifesaver for SQL Server and IIS hosts.
You might ask, "Windows 7 is dead. Why write about an optional update from 2017?" kb4023814
KB4023814 is a Microsoft update labeled as an "Update for Windows 10 Reliability" or a "Component Update". It is designed to ensure that devices running older versions of Windows 10 are capable of receiving and installing future quality and feature updates. If you ever saw System process (ntoskrnl
Microsoft frequently updates the KB4023814 package to include new reliability improvements. When a new version is released, it appears as a new update. You might ask, "Windows 7 is dead