Applies ToWindows Server 2012 ESU

Release Date:

9/04/2024

Version:

Monthly Rollup

Important The installation of this Extended Security Update (ESU) might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012. For a successful installation, please make sure all Subset of endpoints for ESU only are met as described in Connected Machine agent network requirements.  

Reminder

Summary

Learn more about this security-only update, including improvements, any known issues, and how to get the update.

Note Verify that you have installed the required updates listed in the How to get this update section before installing this update.

For information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following Description of the standard terminology that is used to describe Microsoft software updates. To view other notes and messages, see the Windows Server 2012 update history home page.

Improvements

This cumulative security update contains improvements that are part of update KB5035930 (released March 12, 2024). This update includes the following improvements:

For more information about the resolved security vulnerabilities, please refer to the Deployments | Security Update Guide and the April 2024 Security Updates.

Known issues in this update

Symptoms

Next step

After installing this update on domain controllers (DCs), you might notice a significant increase in NTLM authentication traffic. This issue is likely to affect organizations that have a very small percentage of primary domain controllers in their environment and high NTLM traffic.

This issue is resolved in the Windows update (KB5037778) released on or after May 14, 2024.

After installing this update, Windows devices might encounter VPN connection failures.

This issue is resolved in the Windows update (KB5037778) released on or after May 14, 2024.

How to get this update

Before installing this update

We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

If you use Windows Update, the latest SSU (KB5037022) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.

Language packs

If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Learn about adding a language pack to Windows.

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.

Microsoft Update Catalog

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

To download updates from the Update Catalog, see Steps to download updates from the Windows Update Catalog.

Windows Server Update Services (WSUS)

Yes

This update will automatically sync with WSUS if you configure Products and Classifications as follows:

Product: Windows Server 2012

Classification: Security Updates

For more information, see Configure classifications and products to synchronize.

File information

For a list of the files that are provided in this update, download the file information for update KB5036969.

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