January 10, 2017—KB3210721 (OS Build 10586.753)

Improvements and fixes

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

• Addressed security issues related to Microsoft Edge.

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

Known issues in this update

• Running the application in Windows mode (not full screen)

• Starting the application with only one monitor connected

How to get this update

This update will be downloaded and installed automatically from Windows Update. To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

• Update replacement information
  This update replaces the previously released update KB3205386.
• File information
  For a list of the files that are provided in this update, download the file information for cumulative update KB3210721. If you’re installing a Windows 10 update for the first time, the package size for the X86 version is 569 MB and the package size for the x64 version is 1,087 MB.