August 13, 2024 Security update (KB5041160)
Applies To
Azure Stack HCI, version 22H2Release Date:
13/08/2024
Version:
OS Build 20349.2655
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 Azure Stack HCI, version 22H2, see its update history page.
Improvements
This security update includes quality improvements. 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.
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[Remote Desktop Session Host (RDSH)] Users cannot connect to the RDSH, and the host loses data. This occurs because win32kbase.sysstops responding.
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[Windows Defender Application Control (WDAC)] A memory leak occurs that might exhaust system memory as time goes by. This issue occurs when you provision a device.
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[Protected Process Light (PPL) protections] You can bypass them.
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[Windows Kernel Vulnerable Driver Blocklist file (DriverSiPolicy.p7b)] This update adds to the list of drivers that are at risk for Bring Your Own Vulnerable Driver (BYOVD) attacks.
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[BitLocker (known issue)] A BitLocker recovery screen shows when you start up your device. This occurs after you install the July 9, 2024, update. This issue is more likely to occur if device encryption is on. Go to Settings > Privacy & Security > Device encryption. To unlock your drive, Windows might ask you to enter the recovery key from your Microsoft account.
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[Lock screen] This update addresses CVE-2024-38143. Because of this, the “Use my Windows user account” checkbox is not available on the lock screen to connect to Wi-Fi.
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[NetJoinLegacyAccountReuse] This update removes this registry key. For more information refer to KB5020276—Netjoin: Domain join hardening changes.
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[Secure Boot Advanced Targeting (SBAT) and Linux Extensible Firmware Interface (EFI)] This update applies SBAT to systems that run Windows. This stops vulnerable Linux EFI (Shim bootloaders) from running. This SBAT update will not apply to systems that dual-boot Windows and Linux. After the SBAT update is applied, older Linux ISO images might not boot. If this occurs, work with your Linux vendor to get an updated ISO image.
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[Domain Name System (DNS)] This update hardens DNS server security to address CVE-2024-37968. If the configurations of your domains are not up to date, you might get the SERVFAIL error or time out.
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[Line Printer Daemon (LPD) protocol] Using this deprecated protocol to print might not work as you expect or fail. This issue occurs after you install the July 9, 2024, and later updates.
Note When it is no longer available, clients, like UNIX, that use it will not connect to a server to print. UNIX clients should use the Internet Printing Protocol (IPP). Windows clients can connect to shared UNIX printers using the Windows Standard Port Monitor.
For more information about security vulnerabilities, please refer to the Security Update Guide and the August 2024 Security Updates.
To return to the Azure Stack HCI documentation site
Azure Stack HCI, version 22H2 servicing stack update (KB5041590)- 20349.2641
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 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.
To install the LCU on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.
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: Azure Stack HCI 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 5041160.
For a list of the files that are provided in the servicing stack update, download the file information for the SSU (KB5041590) - version 20349.2641.
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