April 14, 2026—KB5082052 (OS Build 22631.6936)

​​​​​Announcements and messages

This section provides key notifications related to this release, including announcements, change logs, and end-of-support notices.

Improvements

This update addresses security issues for your Windows operating system. 

This security update contains fixes and quality improvements from KB5078883 (released March 10, 2026). The following summary outlines key issues addressed by this update. Also, included are available new features. The bold text within the brackets indicates the item or area of the change.

• [Secure Boot]​​​​​​​ 

  • New! The status of Secure Boot certificate updates on your device may be displayed in the Windows Security app (Settings > Privacy & security > Windows Security). Learn more about the status alerts via badges and notifications. These enhancements are disabled by default on commercial devices.

  • With this update, Windows quality updates include additional high confidence device targeting data, increasing coverage of devices eligible to automatically receive new Secure Boot certificates. Devices receive the new certificates only after demonstrating sufficient successful update signals, maintaining a controlled and phased rollout.

  • This update addresses an issue where the device might enter BitLocker Recovery after the Secure Boot updates.  ​​​​​​​

• [Networking] This update improves reliability when Windows uses SMB compression over QUIC. After you install this update, SMB compression requests over QUIC complete more consistently, reducing the likelihood of timeouts and supporting smoother, more dependable performance.

• [Remote Desktop] This update improves protection against phishing attacks that use Remote Desktop (.rdp) files. When you open an .rdp file, Remote Desktop shows all requested connection settings before it connects, with each setting turned off by default. A one-time security warning also appears the first time you open an .rdp file on a device. For more information, see Understanding security warnings when opening Remote Desktop (RDP) files.

• ​​​​​​​[Sign-In] Fixed] After you install the Windows update released on or after March 10, 2026, some users might experience an issue signing in to apps with a Microsoft account. Even when the device has a working Internet connection, a “no Internet” error appears during sign in and prevents access to Microsoft services and apps such as Microsoft Teams.

If you've already installed previous updates, your device will download and install only the new updates included in this package.

For more information about security vulnerabilities, see the Security Update Guide and the April 2026 Security Update.

Windows 11 servicing stack update (KB5086307) - 22621.6937

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​​​​​​​

Microsoft is not currently aware of any issues with this update.

How to get this update

Before you install this update

Microsoft 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.

Install this update

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

File information

For a list of the files provided in this update, download the file information for cumulative update 5082052.   

For a list of the files provided in the servicing stack update, download the file information for the SSU (KB5086307) - versions 22621.6937. 

Related topics

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