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Release Date:

13/07/2021

Version:

OS Build 20348.112

Improvements and fixes

This public preview security update  includes quality improvements. Key changes include:

  • Removes support for the PerformTicketSignature setting and permanently enables Enforcement mode for CVE-2020-17049. For more information and steps to enable full protection on domain controller servers, see Managing deployment of Kerberos S4U changes for CVE-2020-17049

  • Security updates to Windows Apps, Windows Management, Windows Fundamentals, Windows Authentication, Windows User Account Control (UAC), Operating System Security, Windows Graphics, and Windows Storage and Filesystems.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

To return to the Azure Stack HCI documentation site

Known issues in this update

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

How to get this update

The July 13, 2021 security update public preview (KB5004243) for Azure Stack HCI, version 21H2 is delivered from the release channels below. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

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: Azure Stack HCI

Classification: Security Updates

File Information

For a list of the files that are provided in this update, download the file information for cumulative update 5004243.

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