March 29, 2018—KB4096309 (OS Build 14393.2156)

Applies to: Windows 10, version 1607Windows Server 2016

Improvements and fixes


This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

  • Addresses an issue that can cause operational degradation or a loss of environment because of connectivity issues in certain environment configurations after installing KB4088889 (released March 22, 2018) or KB4088787 (released March 13, 2018).

If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.

For more information about the resolved security vulnerabilities, see the Security Update Guide.

Known issues in this update


Microsoft is not currently aware of any issues with this update.

How to get this update


To get the standalone package for this update, go to the Microsoft Update Catalog website.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4096309 .