Note
- 07/09/24---END OF SERVICE NOTICE---
- IMPORTANT Home and Pro editions of Windows 11, version 22H2 will reach end of service on October 8, 2024. Until then, these editions will only receive security updates. They will not receive non-security, preview updates. To continue receiving security and non-security updates after October 8, 2024, we recommend that you update to the latest version of Windows.
- Note We will continue to support Enterprise and Education editions after October 8, 2024.
Note
- 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, version 23H2, 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
Note
To view the list of addressed issues, click or tap the OS name to expand the collapsible section.
Windows 11, version 23H2
Important
Use EKB KB5027397 to update to Windows 11, version 23H2.
This security update includes quality improvements. Key changes include:
- This build includes all the improvements in Windows 11, version 22H2.
- No additional issues are documented for this release.
Windows 11, version 22H2
This security update includes improvements that were a part of update KB5041587 (released August 27, 2024). Below is a summary of the key issues that this update addresses when you install this KB. If there are new features, it lists them as well. The bold text within the brackets indicates the item or area of the change we are documenting.
- [Windows Installer] When it repairs an application, the User Account Control (UAC) does not prompt for your credentials. After you install this update, the UAC will prompt for them. Because of this, you must update your automation scripts. Application owners must add the Shield icon. It indicates that the process requires full administrator access. To turn off the UAC prompt, set the HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Installer\DisableLUAInRepair registry value to 1. The changes in this update might affect automatic Windows Installer repairs; see Application Resiliency: Unlock the Hidden Features of Windows Installer.
- [Dual boot of Windows and Linux (known issue)] Linux might fail to start up when you turn on dual-boot setup for Windows and Linux on your device. The error message is, “Verifying shim SBAT data failed: Security Policy Violation. Something has gone seriously wrong: SBAT self-check failed: Security Policy Violation.” See the full guidance in CVE-2022-2601 and CVE-2023-40547.
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 website and the September 2024 Security Updates.
Windows 11 servicing stack update (KB5043937) - 22621.4166 and 22631.4166
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
Microsoft is not currently aware of any issues with this update.
How to get this update
Before you install this update
Microsoft 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 update
To install this update, use one of the following Windows and Microsoft release channels.
| Available | Next Step |
|---|---|
| Yes | None. This update will be downloaded and installed automatically from Windows Update and Microsoft Update. |
Note
- If you want to remove the LCU
- To 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 information
For a list of the files that are provided in this update, download the file information for cumulative update 5043076.
For a list of the files that are provided in the servicing stack update, download the file information for the SSU (KB5043937) - versions 22621.4166 and 22631.4166.