Patchday: Windows 10/Server Updates (July 9, 2024)

Windows[German]On July 9, 2024 (second Tuesday of the month, patch day at Microsoft), various cumulative updates were released for the supported Windows 10 builds (from the RTM version to the current version) as well as for the Windows Server counterparts. Here are some details on the respective security updates for Windows 10, whereby Windows 10 version 21H2 has now reached the end of life and will no longer receive updates in the future.


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A list of the updates can be found on this Microsoft website. I have extracted the details below. Since March 2021, Microsoft has integrated the Servicing Stack Updates (SSUs) for newer Windows 10 builds into the cumulative update.

Updates for Windows 10 Version 21H1-22H2

For the Windows 10 versions mentioned above, Microsoft only provides one update package, which is named below.

Update KB5040427 for Windows 10 Version 21H1 – 22H2

Cumulative Update KB5040427 raises the OS build for all Windows 10 variants to 1904x.4651 – for 21H2, only the Enterprise LTSC and IoT variants will receive the update (for the last time). The update only contains security fixes, but no new operating system functions. The cumulative update is simply called:

  • This update addresses security issues for your Windows operating system.
  • Windows Installer. When it repairs an application, the User Account Control (UAC) does not prompt for your credentials. After you install this update, the UAC will prompt for them. Because of this, you might have to update your automation scripts. Do this by adding the Shield icon. It indicates that the process requires full administrator access. To turn off the UAC prompt, set the HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Installer\DisableLUAInRepair
    registry value to 1. For more information, see: Application Resiliency: Unlock the Hidden Features of Windows Installer and Machine Policies – Win32 apps.
  • Remote Authentication Dial-In User Service (RADIUS) protocol. This issue is related to MD5 collisions. For more information, see KB5040268.

Microsoft also points out that this update makes quality improvements to the Servicing Stack (responsible for Microsoft updates). This update is automatically downloaded and installed by Windows Update, but is also available in the Microsoft Update Catalog and via WSUS and WUfB. Please note the information on installation and known problems described in the support article.

Updates for Windows 10/Server 2019

The following updates are available for Windows 10 Enterprise 2019 LTSC and Windows Server 2019.

Update KB5040430 for Windows 10 Enterprise 2019 LTSC /Windows Server 2019

Cumulative Update KB5040430 (is sorted under Windows 10 v1809, but refers to the 2019 versions and) and includes quality improvements but no new operating system features. This update is only available for Windows 10 2019 Enterprise LTSC and IoT Enterprise LTSC (the remaining versions will no longer receive security updates on May 11, 2021) and Windows Server 2019. Microsoft lists a number of fixes.


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  • This update addresses security issues for your Windows operating system.
  • Windows Installer. When it repairs an application, the User Account Control (UAC) does not prompt for your credentials. After you install this update, the UAC will prompt for them. Because of this, you might have to update your automation scripts. Do this by adding the Shield icon. It indicates that the process requires full administrator access. To turn off the UAC prompt, set the HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Installer\DisableLUAInRepair
    registry value to 1. For more information, see: Application Resiliency: Unlock the Hidden Features of Windows Installer and Machine Policies – Win32 apps.
  • Windows Local Administrator Password Solution (LAPS). Its Post Authentication Actions (PAA) do not occur at the end of the grace period. Instead, they occur at restart.
  • Remote Authentication Dial-In User Service (RADIUS) protocol. This issue is related to MD5 collisions. For more information, see KB5040268.

The update is automatically downloaded and installed by Windows Update, but is also available in the Microsoft Update Catalog, via WSUS and WUfB. Microsoft has also updated the Service Stack Update (SSU). Please note the installation sequence described in the support article and, if applicable, the notes on further requirements and any existing problems.

Updates for Windows 10 version 1507 to 1607

Updates for the Enterprise LTSC versions are available for Windows 10 RTM up to version 1607. These updates are automatically downloaded and installed by Windows Update, but are available for download in the Microsoft Update Catalog (search for the KB number). The latest Servicing Stack Update (SSU) must be installed before manual installation. Details can be found in the respective KB article.

  • Windows 10 Version 1607: Update KB5040434 is only available for Enterprise LTSC and Windows Server 2016. The update addresses security issues.
  • Windows 10 Version 1507: Update KB5040448 is available for the RTM version (LTSC). The update fixes vulnerabilities and any bugs.

There was no update for the remaining Windows 10 versions, as these versions have fallen out of support. If in doubt, details on the above updates can be found in the respective Microsoft KB articles.

Similar articles:
Microsoft Security Update Summary (July 9, 2024)
Patchday: Windows 10/Server Updates (July 9, 2024)
Patchday: Windows 11/Server 2022-Updates (July 9, 2024)
Windows Server 2012 / R2 und Windows 7 (July 9, 2024)
Microsoft Office Updates (July 9, 2024)


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