October 12, 2021—KB5006674 (OS Build 22000.258)

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 11 (original release), see its update history page.NoteFollow @WindowsUpdate to find out when new content is published to the release information dashboard.

Highlights

• Updates security for your Windows operating system.

Improvements and fixes

This security update includes quality improvements. Key changes include:

• Addresses known compatibility issues between some Intel “Killer” and “SmartByte” networking software and Windows 11 (original release). Devices with the affected software might drop User Datagram Protocol (UDP) packets under certain conditions. This creates performance and other issues for protocols based on UDP. For example, some websites might load slower than others on the affected devices, which might cause videos to stream slower in certain resolutions. VPN solutions based on UDP might also be slower.
  If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the Security Update Guide website and the October 2021 Security Updates.

Windows 11 servicing stack update - 22000.190

• 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

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Click or tap to view the known issues

• 0x000006e4 (RPC_S_CANNOT_SUPPORT)

• 0x0000007c (ERROR_INVALID_LEVEL)

• 0x00000709 (ERROR_INVALID_PRINTER_NAME)
  Note The printer connection issues described in this issue are specific to print servers and are not commonly observed in devices designed for home use. Printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5007262.
  All users| After installing Windows 11, some image editing programs might not render colors correctly on certain high dynamic range (HDR) displays. This is frequently observed with white colors, which could display in bright yellow or other colors.This issue occurs when certain color-rendering Win32 APIs return unexpected information or errors under specific conditions. Not all color profile management programs are affected, and color profile options available in the Windows 11 Settings page, including Microsoft Color Control Panel, are expected to function correctly.| This issue is resolved in KB5008353.
  All users| Recent emails might not appear in the search results of the Microsoft Outlook desktop app. This issue is related to emails that have been stored locally in a PST or OST files. It might affect POP and IMAP accounts, as well as accounts hosted on Microsoft Exchange and Microsoft 365. If the default search in the Microsoft Outlook app is set to server search, the issue will only affect the advanced search.| This issue is resolved in KB5010386.
  All users| When attempting to reset a Windows device with apps that have folders with reparse data, such as OneDrive or OneDrive for Business, files which have been downloaded or synced locally from OneDrive might not be deleted when selecting the “Remove everything” option. This issue might be encountered when attempting a manual reset initiated within Windows or a remote reset. Remote resets might be initiated from Mobile Device Management (MDM) or other management applications, such as Microsoft Intune or third-party tools. OneDrive files that are “cloud only” or have not been downloaded or opened on the device are not affected and will not persist, as the files are not downloaded or synced locally.Note Some device manufacturers and some documentation might call the feature to reset your device, “Push Button Reset”, “PBR”, “Reset This PC”, “Reset PC”, or “Fresh Start”.| This issue was addressed in KB5011493. Some devices might take up to seven (7) days after the installation of KB5011493 to fully address the issue and prevent files from persisting after a reset. For immediate effect, you can manually trigger Windows Update Troubleshooter using the instructions in Windows Update Troubleshooter. If you are part of an organization that manages devices or prepared OS images for deployment, you can also address this issue by applying a compatibility update for installing and recovering Windows. Doing that makes improvements to the “safe operating system” (SafeOS) that is used to update the Windows recovery environment (WinRE). You can deploy these updates using the instructions in Add an update package to Windows RE using KB5012414 for Windows 11 (original release).ImportantIf devices have already been reset and OneDrive files have persisted, you must use a workaround above or perform another reset after applying one of the workarounds above.
  IT admins| Universal Windows Platform (UWP) apps might not open on devices that have undergone a Windows device reset. This includes operations that were initiated using Mobile Device Management (MDM), such as Reset this PC, Push-button reset, and Autopilot Reset. UWP apps you downloaded from the Microsoft Store are not affected. Only a limited set of apps are affected, including:

• App packages with framework dependencies

• Apps that are provisioned for the device, not per user account.
  The affected apps will fail to open without error messages or other observable symptoms. They must be re-installed to restore functionality.| This issue is addressed in KB5015882 for all releases starting October 12, 2021 and later.

How to get this update

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 5006674. For a list of the files that are provided in the servicing stack update, download the file information for the SSU - version 22000.190.