January 9, 2024—KB5034130 (OS Build 25398.643)

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 Server, version 23H2, see its update history page.

Improvements

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

• This update addresses an issue that affects the Trusted Sites Zone logon policy. You cannot manage it using mobile device management (MDM).
• 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 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 an issue that affects the Key Distribution Service (KDS). It does not start in the time required if LDAP referrals are needed.
  For more information about security vulnerabilities, please refer to the Security Update Guide and the January 2024 Security Updates.

Windows Server, version 23H2 servicing stack update - 25398.640

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 5034130.For a list of the files that are provided in the servicing stack update, download the file information for the SSU - version 25398.640.