January 3, 2018—KB4056888 (OS Build 10586.1356)

_This update can be applied to Windows 10 Enterprise and Windows 10 Education editions only. _

Improvements and fixes

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

• Security updates to Microsoft Edge, Internet Explorer, Microsoft Scripting Engine, Windows Graphics, Windows Kernel, Windows Datacenter Networking, Windows Virtualization and Kernel, and the Windows SMB Server.
  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.

Windows Update Client ImprovementMicrosoft will release an update directly to the Windows Update Client to improve Windows Update reliability. It will only be offered to devices that haven’t installed the most recent updates.

Known issues in this update

To prevent this issue, Microsoft will temporarily pause Windows OS updates to devices with impacted AMD processors at this time.| This issue is resolved in KB4075200.
Because of an issue that affects some versions of antivirus software, this fix applies only to computers on which the antivirus ISV updated the ALLOW REGKEY.| This issue is resolved in KB4088779.
After installing this update, some users may experience issues logging into some websites when using third-party account credentials in Microsoft Edge.| This issue is resolved in KB4074591.

How to get this update

This update will be downloaded and installed automatically from Windows Update. To get the standalone package for this update, go to the Microsoft Update Catalog website.File informationFor a list of the files that are provided in this update, download the file information for cumulative update 4056888.