Microsoft has released January updates for Windows 10 (which also includes the Cumulative Update) —KB3213986 for 1607, KB3210721 for 1511 and KB3210720 for RTM — and are available for download via Windows Update. The new CU published on January 10, 2017 includes quality improvements, updates OS build to 14393.693. You can find the change log for this update on this page.
Windows 10 Cumulative Update KB3213986
The patch Tuesday apart from Cumulative Update includes definition update for Windows Defender, Security update for Adobe Flash Player, and update for Windows Malicious Software Removal Tool.
If you’ve issues in installing this update, please try to download the update from below links and install. You can also able to download the latest Cumulative Update for Windows 10 v1607 by visiting the Microsoft Update Catalog site in any browser.
KB3213986 -x86 | 515 MB
kb3213986 -x64 | 951 MB