Applies ToWindows Server 2025 Datacenter: Azure Edition

Release Date:

5/13/2025

Version:

OS Build 26100.3981

This update applies to Windows Server 2025 Datacenter & Standard machines that are connected to Azure Arc. For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview of Windows Server 2025, see its update history page.       

Be sure to follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.

Important: This update only applies to devices enrolled in the hotpatch program.

Improvements

This security update includes quality improvements. The following summary outlines key issues addressed by the KB update after you install it.

  • In this update, if a PowerShell session is active, then your computer might require a restart after installing the package​​​​​​​.

If you installed earlier updates, your device downloads and installs only the new updates contained in this package.

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 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

This update downloads and installs 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 that are in this update, download the file information for cumulative update 5061096.

For a list of the files that are in the servicing stack update, download the file information for the SSU (KB5058523) - version 26100.4060.

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