Applies ToWindows Server, version 23H2

Release Date:

6/10/2025

Version:

OS Build 25398.1665

For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview, see the update history page for of Windows Server, version 23H2.

Improvements 

This security update includes quality improvements. The following summary outlines key issues addressed by the KB update after you install it. Also, included are available new features. The bold text within the brackets indicates the item or area of the change.

  • [Graphics]​​​​​​​ Fixed: An issue where some characters appear wider than standard characters, and the sample paragraph in the font preview section doesn’t display correctly.

  • [Memory leak] Fixed: This update addresses an issue in the Input Service that causes increased memory usage, potentially impacting performance in multi-user, multilingual, and remote desktop environments.

  • [Windows Hello] Fixed: This update addresses an issue that prevents users from signing in with self-signed certificates when using Windows Hello for Business with the Key Trust model.​​​​​​​

For more information about security vulnerabilities, see the Security Update Guide and the June 2025 Security Updates

Windows Server, version 23H2 servicing stack update (KB5058522) - 25398.1611

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. To learn more about SSUs, see Simplifying on-premises deployment of servicing stack updates.

Known issues in this update​​​​​​​

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

How to get this update

Before you install this update

Microsoft now 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

To install this update, use one of the following Windows and Microsoft release channels.

Available

Next Step

Included

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

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 provided in this update, download the file information for cumulative update 5060118.

For a list of the files provided in the servicing stack update, download the file information for the SSU (KB5058522) - version 25398.1611

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