For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types.
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Important: Windows 11, version 24H2 is targeting Copilot+ PCs devices and devices that were previously using Windows Insider 24H2 builds.
Highlights
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This update addresses security issues for your Windows operating system.
Improvements
This security update includes improvements that were a part of update KB5039304 (released June 28, 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.
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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 might have to update your automation scripts. Do this by adding 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. For more information, see:
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Remote Authentication Dial-In User Service (RADIUS) protocol. This issue is related to MD5 collisions. For more information, see KB5040268.
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 July 2024 Security Updates.
Windows 11 servicing stack update (KB5039333)- 26100.998
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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Applies to |
Symptom |
Workaround |
|---|---|---|
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All users |
We’re aware of an issue where players on Arm devices are unable to download and play Roblox via the Microsoft Store on Windows. |
Players on Arm devices can play Roblox by downloading the title directly from www.Roblox.com. |
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.
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Available |
Next Step |
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Yes |
None. This update will be downloaded and installed automatically from Windows Update and Microsoft Update. |
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Available |
Next Step |
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Yes |
None. This update will be downloaded and installed automatically from Windows Update for Business in accordance with configured policies. |
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Available |
Next Step |
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Yes |
To get the standalone package for this update, go to the Microsoft Update Catalog website. |
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Available |
Next Step |
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Yes |
This update will automatically sync with Windows Server Update Services (WSUS) if you configure Products and Classifications as follows: Product: Windows 11 Classification: Security Updates |
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 5040435.
For a list of the files that are provided in the servicing stack update, download the file information for the SSU (KB5039333) - version 26100.998.
