May 12, 2020—KB4556852 (Security-only update)

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.

Improvements and fixes

This security update includes quality improvements. Key changes include:

• Updates the 2020 start date for daylight saving time (DST) in the Kingdom of Morocco. For more information, see KB4557900.
• Security updates to Windows App Platform and Frameworks, Windows Input and Composition, Windows Media, Windows Kernel, Windows Core Networking, Windows Peripherals, Internet Information Services, Windows Network Security and Containers, Windows Active Directory, the Microsoft JET Database Engine, and Windows Storage and Filesystems.
  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.

How to get this update