Applies ToWindows Server 2012 R2 ESU

Release Date:

2/11/2025

Version:

Monthly Rollup

Important The installation of this Extended Security Update (ESU) might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012 R2. For a successful installation, please make sure all Subset of endpoints for ESU only are met as described in Connected Machine agent network requirements.

Summary

Learn more about this cumulative security update, including improvements, any known issues, and how to get the update.

Note For information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, see Description of the standard terminology that is used to describe Microsoft software updates. To view other notes and messages, see the Windows 8.1 and Windows Server 2012 R2 update history home page.

Improvements

This cumulative security update includes improvements that are part of update KB5050048 (released January 14, 2025). The following is a summary of the key issues that this update addresses. The bold text within the brackets indicates the item or area of the change we are documenting.

  • [USB cameras] Fixed: Your device does not recognize the camera is on. This issue occurs after you install the January 2025 security update.

  • [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.

For more information about the resolved security vulnerabilities, please refer to the Deployments | Security Update Guide and the February 2024 Security Updates.

Known issues in this update

We are currently not aware of any issues with this update. For the most up-to-date information about known issues for Windows Server 2012 R2, please go to the Windows release health dashboard.

How to get this update

Before installing this update

To install any Windows Server 2012 R2 Monthly Rollup released on or after January 14, 2025, you must first install the latest Servicing Stack Update (SSU). If your device or offline image does not have the latest SSU installed, you cannot install this update.

Caution Until you install the latest SSU, this update will not be offered to your device. To reduce your security risk, install the latest SSU as soon as possible.

  • If you use Windows Update, the latest SSU (KB5052108) will be offered to you automatically. After the latest SSU is installed, you will be able to install this update.

  • If you use the Update Catalog, you must download and install the latest SSU (KB5052108). After the latest SSU is installed, you will be able to install this update.

  • If you are a Windows Server Update Services (WSUS) administrator, you must approve SSU KB5052108 and this update KB5052042​​​​​​​​​​​​​​.​​​​​​​

For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

Language packs

If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Learn about adding a language pack to Windows.

Install this update

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

Windows UpdateUpdate CatalogServer Update Services

Available

Next step

Yes

This update will be downloaded and installed automatically from Windows Update.

Available

Next step

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

To download updates from the Update Catalog, see Steps to download updates from the Windows Update Catalog.

Available

Next step

Yes

This update will automatically sync with Windows Server Update Services (WSUS) if you configure Products and Classifications as follows:

  • Classification: Security Updates

  • Product: Windows Server 2012 R2

File information

For a list of the files that are provided in this update, download the file information for update KB5052042.

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