May 10, 2022—KB5013941 (OS Build 17763.2928)

**Note:**To improve the information presented in the history pages and related KBs and make them more useful to our customers, we have created an anonymous survey for you to share your comments and feedback.

11/17/20
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 1809, see its update history page.

Highlights

• Addresses security issues for your Windows operating system.

Improvements

This security update includes improvements that were a part of update KB5012636 (released April 21, 2022) and also addresses the following issues:

• This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.
  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 May 2022 Security Updates.

Windows 10 servicing stack update - 17763.2865

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.

Known issues in this update

__

Click or tap to view the known issues

Symptom	Workaround
After installing KB4493509, devices with some Asian language packs installed may receive the error, “0x800f0982 - PSFX_E_MATCHING_COMPONENT_NOT_FOUND.”

1. Uninstall and reinstall any recently added language packs. For instructions, see Manage the input and display language settings in Windows 10.

2. Select Check for Updates and install the April 2019 Cumulative Update. For instructions, see Update Windows 10.Note If reinstalling the language pack does not mitigate the issue, reset your PC as follows:

3. Go to the Settingsapp > Recovery.

4. Select Get Started under theReset this PC recovery option.

5. Select Keep my Files.
   Microsoft is working on a resolution and will provide an update in an upcoming release.
   After installing KB5001342 or later, the Cluster Service might fail to start because a Cluster Network Driver is not found.| This issue occurs because of an update to the PnP class drivers used by this service. After about 20 minutes, you should be able to restart your device and not encounter this issue.
   For more information about the specific errors, cause, and workaround for this issue, please see KB5003571.
   |
   After installing the Windows updates released January 11, 2022 or later Windows versions on an affected version of Windows, recovery discs (CD or DVD) created by using the Backup and Restore (Windows 7) app in Control Panel might be unable to start.Recovery discs that were created by using the Backup and Restore (Windows 7) app on devices which have installed Windows updates released before January 11, 2022 are not affected by this issue and should start as expected.NoteNo third-party backup or recovery apps are currently known to be affected by this issue| This issue is addressed in KB5014022.
   Windows server computers might log Event ID 40 in the System event log each time a Group Policy is updated or refreshed on a server or client. The error is found with the Description, ”The event logging service encountered an error when attempting to apply one or more policy settings.” This issue occurs after installing Windows updates released on or after January 11, 2022.The gpupdate and Group Policy Object (GPO) refresh tasks will trigger this error when they run (default run times for these tasks is every 90-120 minutes on member servers or 5 minutes on domain controllers).This issue occurs specifically after you configure any setting underComputer Configuration>Windows Components>Event Log Service>Security. Settings underComputer Configuration>Policies>Windows****Settings >Security Settings>Event Logdo not trigger this error and can be used.IMPORTANT The errors described in this issue do not prevent Security log changes from being applied.| This issue is addressed in KB5014022. Updated May 27, 2022After installing updates released May 10, 2022 on your domain controllers, you might see machine certificate authentication failures on the server or client for services such as Network Policy Server (NPS), Routing and Remote access Service (RRAS), Radius, Extensible Authentication Protocol (EAP), and Protected Extensible Authentication Protocol (PEAP). An issue has been found related to how the mapping of certificates to machine accounts is being handled by the domain controller.NoteInstallation of updates released May 10, 2022, on client Windows devices and non-domain controller Windows Servers will not cause this issue. This issue only affects installation of May 10, 2022, updates installed on servers used as domain controllers.| Updated May 27, 2022The preferred mitigation for this issue is to manually map certificates to a machine account in Active Directory. For instructions, please see Certificate Mapping.NoteThe instructions are the same for mapping certificates to user or machine accounts in Active Directory. If the preferred mitigation will not work in your environment, please see KB5014754—Certificate-based authentication changes on Windows domain controllers for other possible mitigations in the SChannel registry key section.Note Any other mitigation except the preferred mitigations might lower or disable security hardening.This issue was addressed in out-of-band updates released May 19, 2022 for installation on all Domain Controllers in your environment, as well as all intermediary application servers such as Network Policy Servers (NPS), RADIUS, Certification Authority (CA), or web servers which passes the authentication certificate from the client being authenticated to the authenticating DC. If you used any workaround or mitigations for this issue, they are no longer needed, and we recommend you remove them. This includes the removal of the registry key (CertificateMappingMethods = 0x1F) documented in theSChannel registry key section of KB5014754. There is no action needed on the client side to resolve this authentication issue.To get the standalone package for these out-of-band updates, search for the KB number in the Microsoft Update Catalog. You can manually import these updates into Windows Server Update Services (WSUS) and Microsoft Endpoint Configuration Manager. For WSUS instructions, see WSUS and the Catalog Site. For Configuration Manger instructions, see Import updates from the Microsoft Update Catalog. Note The below updates are not available from Windows Update and will not install automatically.Cumulative updates:

• Windows Server 2022: KB5015013
• Windows Server, version 20H2: KB5015020
• Windows Server 2019: KB5015018
• Windows Server 2016: KB5015019
  Note You do not need to apply any previous update before installing these cumulative updates. If you have already installed updates released May 10, 2022, you do not need to uninstall the affected updates before installing any later updates including the updates listed above.

How to get this update

Before installing this updateMicrosoft 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 the LCU. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.Prerequisite:You**must **install the August 10, 2021 SSU (KB5005112) before installing the LCU.Install this update****Release Channel	Available	Next Step
Windows Update and Microsoft Update	Yes	None. This update will be downloaded and installed automatically from Windows Update.
Windows Update for Business	Yes	None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies.
Microsoft Update Catalog	Yes	To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)	Yes	This update will automatically sync with WSUS if you configure Products and Classifications as follows:Product: Windows 10Classification: Security Updates

If you want to remove the LCUTo remove the LCU after installing the combined SSU and LCU package, use the DISM/Remove-Package command line option with the LCU package name as the argument. You can find the package name by using this command:DISM /online /get-packages.Running Windows Update Standalone Installer (wusa.exe) with the**/uninstall **switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.

File informationFor a list of the files that are provided in this update, download the file information for cumulative update 5013941.For a list of the files that are provided in the servicing stack update, download the file information for the SSU - version 17763.2865.