June 11, 2024—KB5039227 (OS Build 20348.2527)

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 Server 2022, see its update history page. NoteFollow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.

Improvements

This security update includes quality improvements. When you install this KB:

• New! This update affects Server Message Block (SMB) over Quick UDP Internet Connections (QUIC). It turns on the SMB over QUIC client certificate authentication feature. Admins can use it to restrict which clients can access SMB over QUIC servers. To learn more, see Configure SMB over QUIC client access control in Windows Server.
• New! The LCU will no longer have the reverse differentials. The client will generate the playback delta. This change will help to reduce the LCU package size by about 20%. This change also offers a few advantages. It:
  • Reduces bandwidth usage
  • Provides faster downloads
  • Minimizes network traffic
  • Improves performance on slow connections.
• This update affects the version of curl.exethat isin Windows. The version number is now 8.7.1.
• This update addresses an issue that affects Outlook and OneNote. Their search function stops working. This occurs when you use Azure Virtual Desktop (AVD).
• This update addresses an issue that affects lsass.exe. It stops responding. This occurs after you install the April 2024 security updates on Windows servers.
• This update addresses an issue that affects Windows Hello for Business. You cannot use it to authenticate to Entra ID on certain apps. This occurs when you use Web Access Management (WAM).
• This update addresses an issue that affects a Microsoft Entra ID account. Devices cannot authenticate a second one. This occurs after you install the Windows update, dated November 13, 2023.
• This update addresses an issue that affects Microsoft Edge. The UI is wrong for the Internet Options Data Settings.
• This update addresses an issue that affects Storage Spaces Direct (S2D) and Remote Direct Memory Access (RDMA). When you use them with SMBdirect in your networks, the networks fail. You also lose the ability to manage clusters.
• This update addresses an issue that affects Containers. They do not move past the “ContainerCreating” status.
• This update addresses an issue that affects Windows Defender Application Control (WDAC). It prevents a stop error that occurs when you apply more than 32 policies.
• This update addresses an issue that might stop your system from resuming from hibernate. This occurs after you turn on BitLocker.
• This update addresses an issue that affects Windows Defender Application Control (WDAC). The issue copies unsigned WDAC policies to the Extensible Firmware Interface (EFI) disk partition. It is reserved for signed policies.
• This update addresses an issue that affects Enhanced Fast Reconnect. It fails. This occurs when you use it with third-party remote desktop protocol (RDP) providers.
• This update addresses an issue that affects the Remote Desktop Session Host (RD Session Host). A deadlock occurs when a large number of users sign in.
• This update addresses an issue that affects dsamain.exe. It stops responding. This occurs when the Knowledge Consistency Checker (KCC) runs evaluations.
• This update addresses an issue that affects lsass.exe. It leaks memory. This occurs during a Local Security Authority (Domain Policy) Remote Protocol (LSARPC) call.
• This update addresses an issue that affects the kernel stack. It might overflow. Because of this, VMs might shut down prematurely.
  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 Security Update Guide and the June 2024 Security Updates.

Windows Server 2022 servicing stack update (KB5039343) - 20348.2522

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

How to get this update

Before you install this updateMicrosoft 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 and Servicing Stack Updates (SSU): Frequently Asked Questions.Install this updateTo install this update, use one of the following Windows and Microsoft release channels.

Windows UpdateBusinessCatalogServer Update Services

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 5039227. For a list of the files that are provided in the servicing stack update, download the file information for the SSU (KB5039343) - version 20348.2522.