KB5126031: Setup Dynamic Update for Windows Server 2022: September 8, 2026

Applies To
Windows Server 2022

Summary

This update addresses security vulnerabilities in Windows setup binaries or any files that setup uses for feature updates in Windows Server 2022.

How to get this update

Install this update

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

Available Next step
Available This update is available through Windows Update. It will be downloaded and installed automatically.

About this update

Item Description
Prerequisites There are no prerequisites to apply this update.
Restart information You do not have to restart your computer after you apply this update.
Update replacement information This update replaces the previously released update KB5120243.
File information A list of the files included in this update is provided in a CSV (comma-delimited) (.csv) file. You can open the file in a text editor, such as Notepad, or in Microsoft Excel.

Note The English (United States) version of this software update might contain files for additional languages.

Download Download the file information for update KB5126031.

References

End of support

After October 14, 2031, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows Server 2022. We recommend that you upgrade to a later version of Windows Server.