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January 13, 2026—KB5073724 (OS Builds 19045.6809 and 19044.6809)​

Applies To


Release Date:
1/13/2026
Version:
OS Builds 19045.6809 and 19044.6809
Windows Secure Boot certificate expiration

Important:
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 You do not have permission to view the full content of this post. Log in or register now.


Summary

This article lists the security issues and quality improvements included in this security update.

Windows 10, version 22H2Windows 10, version 21H2
Applies to: Windows 10, version 22H2

Important: Use EKB You do not have permission to view the full content of this post. Log in or register now. to update to Windows 10, version 22H2.
This security update includes fixes and quality improvements that are part of the following updates:

The following is a summary of the issues that this update addresses when you install this update. 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.

  • [Drivers] This update removes the following modem drivers: agrsm64.sys (x64), agrsm.sys (x86), smserl64.sys (x64) and smserial.sys (x86). Modem hardware dependent on these specific drivers will no longer work in Windows.
  • [Secure Boot] Starting with this update, Windows quality updates include a subset of high confidence device targeting data that identifies devices eligible to automatically receive new Secure Boot certificates. Devices will receive the new certificates only after demonstrating sufficient successful update signals, ensuring a safe and phased deployment.
  • [WinSqlite3.dll] Fixed: The Windows core component, WinSqlite3.dll, has been updated. Previously, some security software might have detected this component as vulnerable.

    Note: WinSqlite3.dll is a separate component from sqlite3.dll, which is found in application-specific directories and is not a Windows component. If security applications continue to detect sqlite3.dll as vulnerable, contact the developer of the app using sqlite3.dll for an update. If sqlite3.dll is being used by a Microsoft app, install the latest version of the app from the Microsoft Store.
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 You do not have permission to view the full content of this post. Log in or register now. website and the You do not have permission to view the full content of this post. Log in or register now..

For information about Windows update terminology, see the article about the You do not have permission to view the full content of this post. Log in or register now. and the You do not have permission to view the full content of this post. Log in or register now.. For an overview of Windows 10, version 22H2, see its You do not have permission to view the full content of this post. Log in or register now..

Note Follow You do not have permission to view the full content of this post. Log in or register now. to find out when new content is published to the Windows release health dashboard.

Known issues in this update

Connection and authentication failures in Azure Virtual Desktop and Windows 365​

Symptoms

After installing the January 2026 security update (You do not have permission to view the full content of this post. Log in or register now.), released on January 13, 2026, credential prompt failures occurred during Remote Desktop connections using the Windows App on Windows client devices, impacting Azure Virtual Desktop and Windows 365. The issue affects Windows App on specific Windows builds, causing sign-in failures.

Workaround

If you are affected by this issue, use one of the following connection options as a workaround:

  • Use the Remote Desktop client for Windows to connect to Azure Virtual Desktop. To download it, go to You do not have permission to view the full content of this post. Log in or register now..
  • Connect by using the Windows App Web Client at You do not have permission to view the full content of this post. Log in or register now. (windows.cloud.microsoft).
Microsoft is working to release an out-of-band update to resolve this issue in the coming days. More information will be shared when it becomes available.

Windows 10 servicing stack update (KB5068780) - versions 19045.6575 and 19044.6575

Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing updates.

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. To learn more about SSUs, see You do not have permission to view the full content of this post. Log in or register now. and You do not have permission to view the full content of this post. Log in or register now..

  • This servicing stack update (SSU) includes enhanced logic to verify whether a device is hosted on Azure, leveraging an updated certificate chain for validation.

    To ensure seamless installation of future updates on Azure-hosted devices, it is strongly recommended to install this latest SSU prior to applying any additional updates.

    Additionally, please ensure that the device can access the required certificate update domains to successfully download and install certificate updates. For more information, refer to:

Download ISO Here:
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