Notice: This website is an unofficial Microsoft Knowledge Base (hereinafter KB) archive and is intended to provide a reliable access to deleted content from Microsoft KB. All KB articles are owned by Microsoft Corporation. Read full disclaimer for more details.

November 12, 2019—KB4525239 (Security-only update)

View products that this article applies to.

Release Date:

Nov 12, 2019

Version:

Security-only update

IMPORTANT Customers who have purchased the Extended Security Update (ESU) for on-premises versions of some operating systems must follow specific procedures to continue receiving security updates after extended support ends on January 14, 2020. For more information, see KB4522133

↑ Back to the top

Improvements and fixes

This security update includes quality improvements. Key changes include:

Provides protections against the Intel® Transactional Synchronization Extensions (Intel® TSX) Transaction Asynchronous Abort vulnerability (CVE-2019-11135). Use the registry settings as described in the Windows Server article. (These registry settings are disabled by default for Windows Server OS editions.)
Security updates to Microsoft Graphics Component, Windows Input and Composition, Windows Virtualization, Windows Kernel, Windows Datacenter Networking, and the Microsoft JET Database Engine.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

↑ Back to the top

Known issues in this update

Microsoft is not currently aware of any issues with this update.

↑ Back to the top

How to get this update

Before installing this update

Prerequisite:

You must install the updates listed below and restart your device before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.

The April 9, 2019 servicing stack update (SSU) (KB4493730). To get the standalone package for this SSU, search for it in the Microsoft Update Catalog.
The latest SHA-2 update (KB4474419) released October 8, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. For more information on SHA-2 updates, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.

After installing the items above, Microsoft strongly recommends that you install the latest SSU (KB4526478). If you are using Windows Update, the latest SSU will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.

Install this update

Release Channel	Available	Next Step
Windows Update and Microsoft Update	No	See the other options below.
Microsoft Update Catalog	Yes	To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)	Yes	This update will automatically synchronize with WSUS if you configure Products and Classifications as follows: Product: Windows Server 2008 Service Pack 2 Classification: Security Updates