January 9, 2024—KB5034121 (OS Build 22000.2713)

10/10/2023 **REMINDER **Some editions of Windows 11, version 21H2 reached end of service on October 10, 2023. These are Home, Pro, Pro Education, and Pro for Workstation. After that date, 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.NoteFollow @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 article for Windows 11, versions 22H2 and 23H2.

Highlights

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

Improvements

This security update includes improvements. When you install this KB:

• This update addresses an issue that affects the ActiveX scroll bar. It does not work in IE mode.
• This update addresses an issue that causes your device to shut down after 60 seconds. This occurs when you use a smart card to authenticate on a remote system.
• This update includes quarterly changes to the Windows Kernel Vulnerable Driver Blocklist file, DriverSiPolicy.p7b. It adds to the list of drivers that are at risk for Bring Your Own Vulnerable Driver (BYOVD) attacks.
• This update addresses an issue that affects the display of a smart card icon. The icon does not appear when you sign in. This occurs when there are multiple certificates on the smart card.
• This update addresses a known issue that affects BitLocker data-only encryption. A mobile device management (MDM) service, such as Microsoft Intune, might not get the right data. This occurs when you use the FixedDrivesEncryptionType or SystemDrivesEncryptionType policy settings in the BitLocker configuration service provider (CSP) node.
  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 January 2024 Security Updates.

Windows 11 servicing stack update - 22000.2710

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

Microsoft is not currently aware of any issues with this update.

How to get this update

If you want to remove the LCUTo 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 informationFor a list of the files that are provided in this update, download the file information for cumulative update 5034121. For a list of the files that are provided in the servicing stack update, download the file information for the SSU - version 22000.2710.