April 14, 2020—KB4550922 (OS Build 17134.1425)

NEW
IMPORTANTWe have been evaluating the public health situation, and we understand this is impacting our customers. In response to these challenges, we are prioritizing our focus on security updates. Starting in May 2020, we are pausing all optional non-security releases (C and D updates) for all the supported versions of Windows client and server products (Windows 10, version 1909 down to Windows Server 2008 SP2).There is no change to the monthly security updates (B release – Update Tuesday); these will continue as planned to ensure business continuity and to keep our customers protected and productive.

Windows 10, version 1803 (the April 2018 Update) Home and Pro editions have reached end of service. For Windows 10 devices that are at, or within several months of reaching end of service, Windows Update will automatically initiate a feature update (with users having the ability to choose a convenient time). This keeps those devices supported and receiving the monthly updates that are critical to device security and ecosystem health.

Highlights

• Updates to improve security when Windows performs basic operations.
• Updates to improve security when using Microsoft Office products.
• Updates for storing and managing files

Improvements and fixes

This security update includes quality improvements. Key changes include:

• Security updates to the Microsoft Scripting Engine, Windows Kernel, Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Shell, Windows Management, Windows Cloud Infrastructure, Windows Fundamentals, Windows Core Networking, Windows Storage and Filesystems, Windows Update Stack, and the Microsoft JET Database Engine.
  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, please refer to the Security Update Guide.

Known issues in this update

How to get this update