Applies To
Windows 10, version 1607, all editions Windows Server 2016, all editions

Release Date:

14/01/2025

Version:

OS Build 14393.7699

11/19/20 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 10, version 1607, see its update history page.   

Important: Windows updates do not install Microsoft Store application updates. If you are an enterprise user, see Microsoft Store apps - Configuration Manager. If you are a consumer user, see Get updates for apps and games in Microsoft Store.

Highlights

  • This update addresses security issues for your Windows operating system. 

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. 

  • [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.

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 new Security Update Guide website and the January 2025 Security Updates.

Known issues in this update

Symptom

Workaround

After installing this security update, you might experience issues with USB audio devices. You are more likely to experience this issue if you are using a USB 1.0 audio driver based DAC (Digital to Analog converter) in your audio setup. This issue might cause USB audio devices to stop working, preventing audio playback.

DACs (Digital-to-Analog Converters) are commonly used in scenarios where users need to improve the quality of their audio systems. A few scenarios where they are used are home audio systems, professional music studios and portable music players.

Resulting from this issue, the Device Manager might display the error ‘This device cannot start. (Code 10) Insufficient system resources exist to complete the API’.

This issue is addressed in KB5052006.

How to get this update

Before you install this update

Prerequisite:

To install any LCU dated January 14, 2025 and later, you must first install the SSU KB5050109. If your device or offline image does not have this SSU, you cannot install LCUs dated January 14, 2025 and later. If you are a WSUS admin, you must approve KB5050109 and KB5049993​​​​​​​.

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

If you are using Windows Update, the latest SSU (KB5050109) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog. 

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

Yes

None. This update will be downloaded and installed automatically from Windows Update and Microsoft Update.

File information 

For a list of the files that are provided in this update, download the file information for cumulative update 5049993.

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