July 11, 2023—KB5028166 (OS Builds 19044.3208 and 19045.3208)

**5/9/23
REMINDER **All editions of Windows 10, version 20H2 reached end of service on May 9, 2023. After May 9, 2023, these devices will not receive monthly security updates. These updates contain protections from the latest security threats. To continue receiving security and quality updates, we recommend that you update to the latest version of Windows.

**6/13/23
REMINDER **Windows 10, version 21H2 reached end of service on June 13, 2023. We will continue to service the following editions of Windows 10, version 21H2: Windows 10 Enterprise and Education, Windows 10 IoT Enterprise, and Windows 10 Enterprise multi-session. All editions of Windows 10, version 22H2 will continue to receive security and optional releases.

11/17/20For 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 21H2, see its update history page.**Note **Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.

Highlights

• This update addresses security issues for your Windows operating system.

Improvements

NoteTo view the list of addressed issues, click or tap the OS name to expand the collapsible section.

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Windows 10, version 22H2

**Important:**Use EKB KB5015684 to update to Windows 10, version 22H2.

This security update includes quality improvements. Key changes include:

• This build includes all the improvements from the supported Windows 10, version 21H2 editions.
• No additional issues are documented for this release.

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Windows 10, version 21H2 editions: Windows 10 Enterprise and Education, Windows 10 IoT Enterprise, and Windows 10 Enterprise multi-session

**Important:**Use EKB KB5003791 to update to the supported editions of Windows 10, version 21H2.

This security update includes quality improvements that were a part of update KB5027293 (released June 27, 2023). When you install this KB:

• This update makes 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 July 2023 Security Updates.

Windows 10 servicing stack update - 19044.3205 and 19045.3205

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

Symptom

Workaround

Devices with Windows installations created from custom offline media or custom ISO image might have Microsoft Edge Legacy removed by this update, but not automatically replaced by the new Microsoft Edge. This issue is only encountered when custom offline media or ISO images are created by slipstreaming this update into the image without having first installed the standalone servicing stack update (SSU) released March 29, 2021 or later.NoteDevices that connect directly to Windows Update to receive updates are not affected. This includes devices using Windows Update for Business. Any device connecting to Windows Update should always receive the latest versions of the SSU and latest cumulative update (LCU) without any extra steps.

To avoid this issue, be sure to first slipstream the SSU released March 29, 2021 or later into the custom offline media or ISO image before slipstreaming the LCU. To do this with the combined SSU and LCU packages now used for Windows 10, version 20H2 and Windows 10, version 2004, you will need to extract the SSU from the combined package. Use the following steps to extract the SSU:

1. Extract the cab from the msu via this command line (using the package for KB5000842 as an example): expand Windows10.0-KB5000842-x64.msu /f:Windows10.0-KB5000842-x64.cab <destination path> 2. Extract the SSU from the previously extracted cab via this command line:expand Windows10.0-KB5000842-x64.cab /f: <destination path>* 3. You will then have the SSU cab, in this example namedSSU-19041.903-x64.cab. Slipstream this file into your offline image first, then the LCU.
   If you have already encountered this issue by installing the OS using affected custom media, you can mitigate it by directly installing the new Microsoft Edge. If you need to broadly deploy the new Microsoft Edge for business, see Download and deploy Microsoft Edge for business.
   Using the FixedDrivesEncryptionType or SystemDrivesEncryptionType policy settings in the BitLocker configuration service provider (CSP) node in mobile device management (MDM) apps might incorrectly show a 65000 error in the “Require Device Encryption” setting for some devices in your environment. Affected environments are those with the “Enforce drive encryption type on operating system drives” or “Enforce drive encryption on fixed drives” policies set to enabled and selecting either “full encryption” or “used space only”. Microsoft Intune is affected by this issue but third-party MDMs might also pe affected. Important This issue is a reporting issue only and does not affect drive encryption or the reporting of other issues on the device, including other BitLocker issues.| This issue is addressed in KB5034203.

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). For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.Prerequisite:Based on your installation scenario, choose one of the following:

1. For offline OS image servicing:If your image does not have the March 22, 2022 (KB5011543) or later LCU, you mustinstall the special standalone May 10, 2022 SSU (KB5014032) before installing this update.
2. For Windows Server Update Services (WSUS) deployment or when installing the standalone package from Microsoft Update Catalog: If your devices do not have the May 11, 2021 (KB5003173) or later LCU, you mustinstall the special standalone August 10, 2021 SSU (KB5005260) before installing this update.
   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 10, version 1903 and laterClassification: 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 5028166.For a list of the files that are provided in the servicing stack update, download the file information for the SSU - versions 19044.3205 and 19045.3205.