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Release Date:

12/09/2023

Version:

OS Build 22000.2416

8/8/23
IMPORTANT
After September 26, 2023, there will no longer be optional, non-security preview releases  for Windows 11, version 21H2.  Only cumulative monthly security updates will continue for the supported versions of Windows 11, version 21H2.

8/8/2023
IMPORTANT Some editions of Windows 11, version 21H2 will reach end of service on October 10, 2023.  These are Home, Pro, Pro Education, and Pro for Workstation.  After October 10, 2023, the devices that run these editions will not receive monthly security and quality updates. These updates contain protections from the latest security threats.

We will continue to support the remaining editions of Windows 11, version 21H2. 

For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. For an overview of Windows 11, version 21H2, see its update history page.

Note Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.       

Tip: Looking for this month's video? It's now in the Windows 11, version 22H2 article.

Highlights  

  • This update addresses security issues for your Windows operating system.     

Improvements

This security update includes improvements that were a part of update KB5029332 (released August 22, 2023). When you install this KB:

  • This update addresses an issue that affects authentication. Using a smart card to join or rejoin a computer to an Active Directory domain might fail. This occurs after you install Windows updates dated October 2022 or later. For more details, see KB5020276.

If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.

For more information about security vulnerabilities, please refer to the Security Update Guide website and the September 2023 Security Updates.

Windows 11 servicing stack update - 22000.2355

This update makes quality improvements to 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 so that your devices can receive and install Microsoft updates.

Known issues in this update

Applies to

Symptom

Workaround

IT admins

Using the FixedDrivesEncryptionType or SystemDrivesEncryptionType policy settings in the BitLocker configuration service provider (CSP) node in mobile device management (MDM) apps might incorrectly show a 65000 error in the "Require Device Encryption" setting for some devices in your environment. Affected environments are those with the “Enforce drive encryption type on operating system drives” or "Enforce drive encryption on fixed drives" policies set to enabled and selecting either "full encryption" or "used space only". Microsoft Intune is affected by this issue but third-party MDMs might also pe affected.

Important This issue is a reporting issue only and does not affect drive encryption or the reporting of other issues on the device, including other BitLocker issues.

To mitigate this issue in Microsoft Intune, you can set the “Enforce drive encryption type on operating system drives” or "Enforce drive encryption on fixed drives" policies to not configured.

We are working on a resolution and will provide an update in an upcoming release.

How to get this update

Before installing this update

Microsoft combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions

Install this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

Yes

None. This update will be downloaded and installed automatically from Windows Update.

Windows Update for Business

Yes

None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies.

Microsoft Update Catalog

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Windows Server Update Services (WSUS)

Yes

This update will automatically sync with WSUS if you configure Products and Classifications as follows:

Product: Windows 11

Classification: Security Updates

If you want to remove the LCU

To remove the LCU after installing the combined SSU and LCU package, use the DISM/Remove-Package command line option with the LCU package name as the argument. You can find the package name by using this command: DISM /online /get-packages.

Running Windows Update Standalone Installer (wusa.exe) with the /uninstall switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 5030217

For a list of the files that are provided in the servicing stack update, download the file information for the SSU - version 22000.2355.  

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