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All information about the Microsoft March Patch Day for Windows 10

Microsoft opened March 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 to 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, 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:

March 2022 Patch-Day 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. Prerequisite for this – i.e. no individual SSU needs to be installed beforehand – in 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, KB5011487 (Build 19044.1586)
  • Windows 10 version 21H1, KB5011487 (Build 19043.1586)
  • Windows 10 version 20H2, KB5011487 (Build 19042.1586)
  • windows 10 version 1909, KB5011485 (Build 18363.2158)
  • windows 10 version 1809, KB5011503 (Build 17763.2686)
  • windows 10 version 1607, KB5011495 (Build 14393.5006)
  • Windows 10 version 1507, KB5011491 (Build 10240.19235)

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 building number is 19044.1586. Users who have yet to install the May 2021 Update or the October 2020 Update will receive build numbers 19043.1586 and 19042.1586.


  • General security update for Windows operating system.
  • Addresses a known issue that occurs when you try to reset a Windows device whose applications have folders that contain repaired data, such as Microsoft OneDrive or Microsoft OneDrive for Business. If you select Delete all, files downloaded from Microsoft OneDrive or synced locally may not be deleted. On some devices, it may take up to seven (7) days after installing this update for the issue to be fully resolved and files gone after a reset. For immediate effect, you can manually activate the Windows Update troubleshooter using the instructions in the Windows Update troubleshooter.
  • Overview of the changes in the Knowledge Base article: KB5011487

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 18363.2158 (for version 1909 or November 2019 Update).


  • General security update for Windows operating system.
  • Resolves an issue that prevents printing from working correctly for some low-integrity applications.
  • Fixes an issue that causes Windows to switch to BitLocker recovery after a maintenance update.
  • Fixes an issue where you may see a blank RD Session window.
  • Addresses issue where Active Directory (AD) attributes are not written correctly during a Lightweight Directory Access Protocol (LDAP) change operation for multiple attributes.
  • Overview of the changes in the Knowledge Base article: KB5011485

Security updates for Windows 10 – version 1809, 1607, 1507

The older Windows 10 versions from 2015, 2016, and 2018 have also received security updates. The security updates contain quality improvements. Overview of the changes in the Knowledge Base articles:[ad_2]

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