This update includes new stability improvements for the update components in Windows 10 Version 1607.
The update components include files and resources that work together with the servicing stack engine in Windows 10. These components make sure that quality updates are installed seamlessly and that they improve the reliability and security of Windows 10.
How to get this update
Only certain builds of Windows 10 Version 1607 require this update. Devices that are running those builds will automatically get the update downloaded and installed through Windows Update.
This update is also offered directly to Windows Update Client for some devices that do not have the most recent updates installed.