Source: https://support.microsoft.com/en-us/help/4480977
Direct download links for KB4480977 from Microsoft Update Catalog:
:arrow: Download KB4480977 MSU for Windows 10 Version 1607 32-bit (x86) - 737.2 MB
:arrow: Download KB4480977 MSU...
Update June 27th 2017: Cumulative Update KB4022723 Windows 10 v1607 Build 14393.1378 - Windows 10 Forums
Source: https://support.microsoft.com/en-us/help/4022715
See also: June 13, 2017 Security Update Guide - Microsoft Security...
Update April 11th 2017: This KB4016635 update has been replaced by KB4015217.
Source: https://support.microsoft.com/en-us/help/4016635/windows-10-update-kb4016635
To download: (Not available in Windows Update)
UPDATE: This cumulative update KB4015438 has been replaced by KB4016635 on March 22nd 2017.
Source: March 20, 2017—KB4015438 (OS Build 14393.969) - Microsoft Support
To manually download: