April 14, 2026—KB5082142 (OS Build 20348.5020)

Announcements and messages

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

Improvements

​​​​​​​This security update contains fixes and quality improvements from KB5078766 ​​​​​​​(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.

• [Connectivity] This update improves the reliability of audio features in Windows, helping reduce system unresponsiveness related to sound or audio activity.

• [Kernel] This update improves system stability during large file operations. Users should experience fewer unexpected interruptions while working with or transferring large files.

• [Kerberos protocol] This update changes the default DefaultDomainSupportedEncTypes value for Kerberos Key Distribution Center (KDC) operations to leverage AES-SHA1 for accounts that do not have an explicit msds-SupportedEncryptionTypes Active Directory attribute defined. For more information see, How to manage Kerberos KDC usage of RC4 for service account ticket issuance changes related to CVE-2026-20833.

• [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. 

• [Secure Boot] 

  • 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.

• [Texts and Fonts] This update improves Windows fonts by adding the new Saudi Riyal currency symbol. This change helps keep text clear, accurate, and visually consistent across your Windows apps and experiences.

• [Windows Deployment Services (WDS)] This update disables the “Hands-Free Deployment” feature in WDS by default and is no longer a supported feature. For more information about this change, see Windows Deployment Services (WDS) Hands-Free Deployment Hardening Guidance related to CVE-2026-0386.

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 Updates.

Windows Server 2022 servicing stack update (KB5082137) -20348.5021

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

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.

Prerequisite for offline OS image servicing:

​​​​​​​Make sure that your image includes KB5030216 (09/12/2023) or a later LCU. If not, install it on your offline media before you install the latest update. This LCU updates the SSU version to 20348.1960. That is the minimum SSU version you must have to prevent error 0x800f0823 (CBS_E_NEW_SERVICING_STACK_REQUIRED).

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 5082142​​​​​​​​​​​​​​​​​​​​​​​​​. 

For a list of the files provided in the servicing stack update, download the file information for the SSU (KB5082137) - version 20348.5021.