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All information about the Microsoft May Patch Day for Windows 10

Microsoft opened May Patch Day and released new updates for all versions of Windows. In addition to patches for the current Windows 10 versions, there are updates for their predecessors. You can find everything about the patch for Windows 11 in a separate post. The updates are recommended for all users as they close security vulnerabilities and introduce improvements.

Microsoft lists all changes and available variants for desktop, server, or HoloLens in the Windows 10 update history and has published the associated Knowledge Base articles. We have collected the available updates, and detailed information about the updates is not yet available, we will provide them as soon as they are available. New updates are available for the following Windows versions:

Patch Day May 2022 Quick Navigation

Security related changes

Microsoft has been combining the latest Operating System Servicing Stack Update (SSU) with the latest Cumulative Update (LCU) since May 2021. Prerequisite for this – i.e. no individual SSU needs to be installed beforehand – is the May 11, 2021 Patch Day update, which implemented the change. Anyone using an older LCU update must first run the separately offered SSU updates. A little tip: At the start of the release, the KB articles may not be directly accessible from Microsoft.

But that usually changes pretty quickly. about the Search the Microsoft Update Catalog but you can already find all new versions. The following list will help you verify that you have the latest version installed. There you will find the latest build numbers for the individual Windows versions. Check your installed version number using the keyboard shortcut Windows + R to open the Run dialog box, type “WinVer” and then invoke the version view.

Windows 10 versions:

  • Windows 10 version 21H2, KB5013942 (Build 19044.1706)
  • Windows 10 version 21H1, KB5013942 (Build 19043.1706)
  • Windows 10 version 20H2, KB5013942 (Build 19042.1706)
  • windows 10 version 1909, KB5013945 (Build 18363.2274)
  • windows 10 version 1809, KB5013941 (Build 17763.2928)
  • windows 10 version 1607, KB5013952 (Build 14393.5125)
  • Windows 10 version 1507, KB5013963 (Build 10240.19297)

Security Updates Windows 10 Version 21H2, 21H1, 20H2, 2004

The latest Windows 10 November 2021 Update (21H2) has received a new security patch. The new construction number is 19044.1706. Users who still have the May 2021 Update or the October 2020 Update installed will receive build numbers 19043.1706 and 19042.1706.


  • General security update for Windows operating system.
  • Overview of the changes in the Knowledge Base article: KB5013942

Security updates for Windows 10 (2019 onwards)

The Windows 10 version from the fall of 2019 has received an update: the new build number is 18363.2212 (for version 1909 or November 2019 Update).


  • General security update for Windows operating system.

This security update contains quality improvements. The main changes are:

  • New! Added improvements for the maintenance of the Secure Boot component of Windows.
  • Addresses an issue that may occur when you use Netdom.exe or the Active Directory Domains And Trusts snap-in to enumerate name suffixes or change routing. These procedures may fail. The error message is “There are not enough system resources to complete the requested service.” This issue occurs after the January 2022 security update is installed on the primary domain controller emulator (PDCe).
  • Addresses an issue that causes the primary domain controller (PDC) of the root domain to generate warning and error events in the system log. This issue occurs when the PDC incorrectly tries to scan outbound trusts only.
  • Addresses a known issue that may prevent recovery discs (CD or DVD) from booting if created using the Backup and Restore (Windows 7) application in Control Panel. This issue occurs after installing Windows updates released on January 11, 2022 or later.
  • Overview of the changes in the Knowledge Base article: KB5013945
Mark Goodman

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