Releasing Windows 10 Build 19043.1052 (21H1) to Beta & Release Preview Channels

Hello Windows Insiders, today we’re releasing 21H1 Build 19043.1052 (KB5003637) to the Beta Channel & Release Preview Channel for those Insiders who are on 21H1. See our blog post here on preparing the Windows 10 May 2021 Update (21H1) for release.

This security update includes quality improvements. Key changes include:

• Security updates to the Microsoft Scripting Engine, Windows App Platform and Frameworks, Windows Input and Composition, Windows Management, Windows Cloud Infrastructure, Windows Authentication, Windows Fundamentals, Windows Virtualization, Windows Kernel, Windows HTML Platform and Windows Storage and Filesystems.

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

Thanks,
The Windows Insider Program Team