February 11, 2025—KB5051987 (OS Build 26100.3194)
Applies To
Windows Server 2025, all editionsRelease Date:
11/02/2025
Version:
OS Build 26100.3194
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 2025, see its update history page.
Note Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.
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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[Digital/Analog converter (DAC) (known issue)] 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 cameras] Fixed: Your device does not recognize the camera is on. This issue occurs after you install the January 2025 security update.
If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.
For more information about security vulnerabilities, please refer to the Security Update Guide and the February 2025 Security Updates.
Windows Server 2025 servicing stack update (KB5052085) - 26100.3189
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
IT admins
Devices that have certain Citrix components installed might be unable to complete installation of the January 2025 Windows security update. This issue was observed on devices with Citrix Session Recording Agent (SRA) version 2411. The 2411 version of this application was released in December 2024. Affected devices might initially download and apply the January 2025 Windows security update correctly, such as via the Windows Update page in Settings. However, when restarting the device to complete the update installation, an error message with text similar to “Something didn’t go as planned. No need to worry – undoing changes” appears. The device will then revert to the Windows updates previously present on the device. This issue likely affects a limited number of organizations as version 2411 of the SRA application is a new version. Home users are not expected to be affected by this issue.
Citrix has documented this issue, including a workaround, which can be performed prior to installing the January 2025 Windows security update. For details, see Citrix’s documentation.
Microsoft is working with Citrix to address this issue and will update this documentation once a resolution is available.
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Description |
Applies to |
|---|---|
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Remote desktop might freeze |
All users |
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Remote desktop might disconnect |
All users |
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Description |
Symptom |
|---|---|
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Remote desktop might freeze |
After installing the February 2025 Security update (KB5051987), released February 11, 2025, and later updates, on Windows Server 2025 devices, you might experience Remote Desktop sessions freezing shortly after connection. When this issue occurs, mouse and keyboard input become unresponsive within the session, requiring users to disconnect and reconnect |
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Remote desktop might disconnect |
After installing the January 2025 Windows preview update (KB5050094) and later updates, users might experience unexpected disconnections with Remote Desktop Protocol (RDP) sessions, including Remote Desktop Services (RDS). We've observed a significant increase in reports of this issue following the release on the March 2025 Windows security update (KB5053598). Users might notice their RDP sessions unexpectedly disconnecting after 65 seconds when establishing UDP-based connections from Windows 11, version 24H2 devices to RDS deployments running versions Windows Server 2016 or earlier. Resulting from this issue, users might experience frequent disconnections from their Remote Desktop and RDS sessions. Note: Windows Server 2025 itself is not affected as an RDS host but might experience disconnects when acting as an RDP client connecting to older servers. |
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Description |
Workaround |
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Remote desktop might freeze |
The resolution for this issue will be available in a future Windows update for Windows Server 2025. |
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Remote desktop might disconnect |
This issue is addressed in KB5053656. IT Admins If you have an enterprise-managed device and have installed the update released March 27, 2025 (KB5053656) or later, you do not need to use a Known Issue Rollback (KIR) or a special Group Policy to resolve this issue. If you are using an update released before March 27, 2025, and have this issue, your IT admin can resolve it by installing and configuring the special Group Policy listed below. The special Group Policy can be found in Computer Configuration > Administrative Templates. For info on deploying and configuring these special Group Policies, see How to use Group Policy to deploy a Known Issue Rollback. Download for Windows 11 Version 24H2 and Windows Server 2025Windows 11 24H2 and Windows Server 2025 KB5053598 250314_20401 Known Issue Rollback This Group Policy will resolve this issue caused by the recent updates released in January, February, and March 2025. Important: You'll need to install and configure the Group Policy for your version of Windows to resolve this issue. You will also need to restart your device(s) to apply the group policy setting. The Group Policy will temporarily disable the change causing this issue. |
All users
After installing this update, you might face issues with the Azure Arc Setup wizard application. You might notice that the Azure Arc Setup wizard app stops responding when you are trying to launch it from either the Windows Start menu or the Taskbar. Resulting from this issue, the application event log in Event viewer might show an application error with Event ID:1000 indicating ‘Faulting application name’ as ‘AzureArcSetup.exe, version: 1.0.0.0’ along with an ‘Exception code’.
If you are unable to launch the Azure Arc Setup wizard app from the Start menu or the Taskbar, you can manually connect to the configuration wizard by following the instructions below:
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Download the Azure Arc Configuration wizard from http://aka.ms/azureconnectedmachineagent.
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Install the ‘AzureConnectedMachineAgent.msi’ file that is downloaded by double clicking on the file.
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Once the installation is completed, you can find the ‘AzureArcConfiguration.exe’ file under C:\Program Files\AzureConnectedMachineAgent.
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Navigate to this folder and double click on the ‘AzureArcConfiguration.exe’ file.
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This will launch the Azure Arc Configuration wizard.
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Follow the instructions on the wizard to onboard your Windows Server to Azure Arc.
Microsoft is working on a resolution and will provide an update in an upcoming release.
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 |
Before you install this update To get the standalone package(s) for this update, go to the Microsoft Update Catalog website. This KB contains one or more MSU files that must be installed in order. Install this update Method 1: Install all MSU files together Download all MSU files for KB5051987 from Microsoft Update Catalog and place them in the same folder (for example, C:/Packages). Use Deployment Image Servicing and Management (DISM.exe) to install the target update. DISM will use the folder specified in PackagePath to discover and install one or more prerequisite MSU files as needed. Updating Windows PC To apply this update to a running Windows PC, run the following command from an elevated Command Prompt:
Or, run the following command from an elevated Windows PowerShell prompt:
Updating Windows Installation media To apply this update to Windows Installation media, see Update Windows installation media with Dynamic Update. To add this update to a mounted image, run the following command from an elevated Command Prompt:
Or, run the following command from an elevated Windows PowerShell prompt:
Method 2: Install each MSU file individually, in order Download and install each MSU file individually either using DISM or Windows Update Standalone Installer in the following order:
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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-24H2 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 5051987.
For a list of the files that are provided in the servicing stack update, download the file information for the SSU (KB5052085) - version 26100.3189.
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