February 11, 2025—KB5051980 (OS Build 25398.1425)
Applies To
Windows Server, version 23H2Release Date:
11/02/2025
Version:
OS Build 25398.1425
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. Below is a summary of the key issues that this update addresses when you install this KB. If there are new features, it lists them as well. The bold text within the brackets indicates the item or area of the change we are documenting.
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[Cluster stability] Fixed: Many servers within the same cluster suddenly shut down. The network is less available, and latency rises.
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[Task Manager] Fixed: The CPU index number might be wrong when you set process affinity. This occurs on servers that have two or more non-uniform memory access (NUMA) nodes.
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[GB18030-2022] This update adds support for this amendment.
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[Memory leak] Fixed: Leaks occur when predictive input ideas show.
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[Windows Kernel Vulnerable Driver Blocklist file (DriverSiPolicy.p7b)] This update adds to the list of drivers that are at risk for Bring Your Own Vulnerable Driver (BYOVD) attacks.
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[Virtual machine (VM) storage pool] Fixed: Some operations that rely on a storage pool stop working. This occurs because the VM cannot reclaim disk space to do things, like load balancing.
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[USB cameras] Fixed: Your device does not recognize the camera is on. This issue occurs after you install the January 2025 security update.
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Digital/Analog converter (DAC)] Fixed: You might experience issues with USB audio devices. This is more likely when you use a DAC audio driver based on USB 1.0. USB audio devices might stop working, which stops playback.
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[USB audio device drivers] Fixed: The code 10 error message, “This device cannot start” appears. This occurs when you connect to certain external audio management devices.
For more information about security vulnerabilities, please refer to the Security Update Guide and the February 2025 Security Updates.
Windows Server, version 23H2 servicing stack update (KB5052422) - 25398.1420
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
Following the installation of the October 2024 security update, some customers report that the OpenSSH (Open Secure Shell) service fails to start, preventing SSH connections. The service fails with no detailed logging, and manual intervention is required to run the sshd.exe process.
This issue is affecting both enterprise, IOT, and education customers, with a limited number of devices impacted. Microsoft is investigating whether consumer customers using Home or Pro editions of Windows are affected.
Customers can temporarily resolve the issue by updating permissions (ACLs) on the affected directories. Follow these steps:
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Open PowerShell as an Administrator.
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Update the permissions for C:\ProgramData\ssh and C:\ProgramData\ssh\logs to allow full control for SYSTEM and the Administrators group, while allowing read access for Authenticated Users. You can restrict read access to specific users or groups by modifying the permissions string if needed.
Use the following commands to update the permissions:
$directoryPath = "C:\ProgramData\ssh" $acl = Get-Acl -Path $directoryPath $sddlString = "O:BAD:PAI(A;OICI;FA;;;SY)(A;OICI;FA;;;BA)(A;OICI;0x1200a9;;;AU)" $securityDescriptor = New-Object System.Security.AccessControl.RawSecurityDescriptor $sddlString $acl.SetSecurityDescriptorSddlForm($securityDescriptor.GetSddlForm("All")) Set-Acl -Path $directoryPath -AclObject $acl
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Repeat the above steps for C:\ProgramData\ssh\logs.
Microsoft is actively investigating the issue and will provide a resolution in an upcoming Windows update. Further communications will be provided when a resolution or additional workarounds are available.
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.
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Available |
Next Step |
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Yes |
None. This update will be downloaded and installed automatically from Windows Update and Microsoft Update. |
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Available |
Next Step |
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Yes |
None. This update will be downloaded and installed automatically from Windows Update for Business in accordance with configured policies. |
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Available |
Next Step |
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Yes |
To get the standalone package for this update, go to the Microsoft Update Catalog website. |
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Available |
Next Step |
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Yes |
This update will automatically sync with Windows Server Update Services (WSUS) if you configure Products and Classifications as follows: Product: Microsoft Server operating system-21H2 Classification: Security Updates |
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 provided in this update, download the file information for cumulative update 5051980.
For a list of the files that are provided in the servicing stack update, download the file information for the SSU (KB5052422) - version 25398.1420.
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