Microsoft Patchday: Cumulative updates for Windows 11 and 10 released

Just in time for the patch day in April, Microsoft again released numerous cumulative updates for the Windows 11 and Windows 10 operating systems, which come with the mandatory optimizations and bug fixes and range from Windows 11 21H2 Build 22000 to Windows 10 1507 Build 10240.

Optimizations and bug fixes

The following cumulative updates for Windows 10 from (original) version 1507, which was released on July 29, 2015 with RTM status, and Windows 11 were officially released for everyone yesterday and are already on the way deployment :

Microsoft Patchday April – Cumulative Updates
  • windows 10
    • Windows 10 20H2/21H1/21H2
      Build 19044.1645 – KB5012599
    • Windows 10 version 1909
      Build 18363.2212 – KB5012591
    • Windows 10 version 1809
      Build 17763.2803 – KB5012647
    • Windows 10 version 1607
      Build 14393.5066 – KB5012596
    • Windows 10 version 1507
      Build 10240.19265 – KB5012653
  • windows 11
    • Windows 11 version 21H2
      Build 22000.613 – KB5012592

The latest cumulative updates mainly focus on security, as the respective release notes reveal. Additionally, the so-called Windows Servicing Stack has been updated, which should ensure a smooth update process for upcoming feature updates.

  • strong points
    • Updates the security of your Windows operating system.
  • improvements
    • This update includes various security improvements for internal operating system functionality. No additional issues have been documented for this release.
  • Windows servicing stack update
    • This update improves the quality of the servicing stack, which is the component that installs Windows updates.
    • Servicing Stack Updates (SSU) ensure that you have a robust and reliable servicing stack to enable your devices to receive and install Microsoft updates.

Search with a revised interface

Cumulative Update KB5012592 for Windows 11 21H2 upgrades Windows 11 to Build 22000.613 and brings with it a revised interface for finding the operating system.

The new search interface in Windows 11 (Image: Microsoft)

Additionally, issues with User Account Control (UAC), Local Security Authority Subsystem Service (LSASS), and the module wmipicmp.dll Fixed.

Download from ComputerBase

As usual, all Cumulative Updates can be downloaded from the ComputerBase download archive directly under this post or obtained through Windows Update Services, Microsoft Update and the Microsoft Update Catalog as well as Update Services. Windows Server Update (WSUS).


  • Windows 10 Cumulative Update

    4.3 stars

    A package containing hotfixes, security updates, critical updates, and fixes for issues.

    • Version 20H2/21H1/21H2 (Build 19044.1645) KB5012599, Win10 German
    • Version 1909 (Build 18363.2212) KB5012591, Win10 German
    • and 3 more
  • Windows 11 Cumulative Update

    4.1 stars

    Regularly updated packages with all security updates and bug fixes for Windows 11.

    • Version 21H2 (Build 22000.613) KB5012592, Win11 German

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