April 14, 2020—KB4550917 (Monthly Rollup)

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.

As of February 11, 2020, Internet Explorer 10 is no longer in support. To get Internet Explorer 11 for Windows Server 2012 or Windows 8 Embedded Standard, see KB4492872. Install one of the following applicable updates to stay updated with the latest security fixes:

• Cumulative Update for Internet Explorer 11 for Windows Server 2012.
• Cumulative Update for Internet Explorer 11 for Windows 8 Embedded Standard.
• The March 2020 Monthly Rollup.

Improvements and fixes

This security update includes improvements and fixes that were a part of update KB4541332(released March 17, 2020) and addresses the following issues:

• Security updates to Internet Explorer, the Microsoft Scripting Engine, Windows Kernel, Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Cloud Infrastructure, Windows Fundamentals, Windows Core Networking, and the Microsoft JET Database Engine.
  For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update

• Perform the operation from a process that has administrator privilege.
• Perform the operation from a node that doesn’t have CSV ownership.
  Microsoft is working on a resolution and will provide an update in an upcoming release.
  Devices on a domain might be unable to install apps published using a Group Policy Object (GPO). This issue only affects app installations that use .msi files. It does not affect any other installation methods, such as from the Microsoft Store.| This issue is resolved in KB4550960.

How to get this update