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October OS security update (KB 5044288) for Azure Stack HCI, version 23H2

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Applies to: Azure Stack HCI, version 23H2

This article describes the OS security update for Azure Stack HCI, version 23H2 that was released on October 8, 2024 and applies to OS build 25398.1189.

Improvements

This security update includes quality improvements. The following key issues and new features are present in this update:

  • Microsoft Defender for Endpoint: Work Folders files fail to sync when Defender for Endpoint is on.

  • Input Method Editor (IME) When a combo box has input focus, a memory leak might occur when you close that window.

  • AppLocker The rule collection enforcement mode is not overwritten when rules merge with a collection that has no rules. This occurs when the enforcement mode is set to “Not Configured”.

  • Remote Desktop Gateway Service The service stops responding. This occurs when a service uses remote procedure calls (RPC) over HTTP. Because of this, the clients that are using the service disconnect.

For more information about security vulnerabilities, see the Security Update Guide and the October 2024 Security Updates.

Known issues

Microsoft is not currently aware of any issues with this update.

To 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.

File list

For a list of the files that are provided in this update, download the file information for Cumulative update 5044288.

For a list of the files that are provided in just the servicing stack update, download the file information for SSU update KB5044403 - version 25398.1182.

Next steps