Applies To
Windows Server 2022 Datacenter: Azure Edition

Release Date:

9/09/2025

Version:

OS Build 20348.4166

Windows Secure Boot certificate expirationImportant: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and preparation steps, see Windows Secure Boot certificate expiration and CA updates.

To learn more about Windows update terminology, see types of Windows updates and monthly quality update types.  For an overview, see the update history page for Windows Server 2022.

Stay informed! Follow @WindowsUpdate for the latest updates from the Windows Release Health Dashboard.

Improvements and fixes

This security update includes quality improvements. The following summary outlines key issues addressed by this update.

  • [Fix for PSDirect connections failing in Hotpatch devices] Addresses an issue in the September 2025 Windows Hotpatch update and the September 2025 Windows security update. This update includes security improvement, between host operating systems and guest virtual machine. It resolves a vulnerability that could allow unauthorized, non-administrator access during a brief window. It also improves reliability when older sessions shut down unexpectedly.  

Note: If the guest virtual machine installs the September 2025 Hotpatch update, Microsoft recommends applying this update. 

If you've already installed previous updates, your device will download and install only the new updates included in this package.

Known issue 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

The English (United States) version of this software update installs files that have the following attributes. This update might contain files for additional languages.

File name

File version

Date

Time

File size

Microsoft.PowerShell.ConsoleHost.Resources.dll

6.1.7600.16385

23-Aug-25

5:40

40,960

Microsoft.PowerShell.ConsoleHost.Resources.dll

10.0.20348.4163

23-Aug-25

5:40

35,328

Microsoft.PowerShell.ConsoleHost.dll

6.1.7600.16385

23-Aug-25

5:40

200,704

Microsoft.PowerShell.ConsoleHost.dll

10.0.20348.4163

23-Aug-25

5:40

238,080

System.Management.Automation.dll

6.1.7600.16385

23-Aug-25

5:40

3,010,560

System.Management.Automation.dll

10.0.20348.4163

23-Aug-25

5:40

6,493,696

System.Management.Automation.Resources.dll

6.1.7600.16385

23-Aug-25

5:40

253,952

System.Management.Automation.Resources.dll

10.0.20348.4163

23-Aug-25

5:40

475,136
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