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 R2. For a successful installation, please make sure all Subset of endpoints for ESU only are met as described in Connected Machine agent network requirements.
Windows 8.1 reached end of support (EOS) on January 10, 2023, at which point technical assistance and software updates are no longer provided. If you have devices running Windows 8.1, we recommend upgrading them to a more current, in-service, and supported Windows release. If devices do not meet the technical requirements to run a more current release of Windows, we recommend that you replace the device with one that supports Windows 11.
Microsoft will not be offering an Extended Security Update (ESU) program for Windows 8.1. Continuing to use Windows 8.1 after January 10, 2023 may increase an organization’s exposure to security risks or impact its ability to meet compliance obligations. For more information, see Windows 8.1 support will end on January 10, 2023.
We recommend updating to a later version of Windows.
Windows Server 2012 R2 reached end of support (EOS) on October 10, 2023. Extended Security Updates (ESUs) are available for purchase and will continue for three years, renewable on an annual basis, until the final date on October 13, 2026. For more information, see Windows Server End of Support: Key Dates. For information about the procedure to continue receiving security updates, see KB5031043.
We recommend upgrading to a later version of Windows Server.
Learn about upgrading Windows Server
Windows Embedded 8.1 Industry Enterprise and Windows Embedded 8.1 Industry Pro reached end of support (EOS) on July 11, 2023. Therefore, technical assistance and software updates are no longer provided.
Learn more about this cumulative security update, including improvements, any known issues, and how to get the update.
This cumulative security update includes improvements that are part of update KB5031419 (released October 10, 2023). This update also makes improvements for the following issue:
This update includes daylight saving time (DST) changes for Syria. For more information, see Syria 2022 time zone update now available.
Known issues in this update
We are currently not aware of any issues with this update.
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 you install the latest Monthly Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Monthly 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 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.
Install this update
Windows Update and Microsoft Update
None. This update will be downloaded and installed automatically from Windows Update.
Microsoft Update Catalog
To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)
This update will automatically sync with WSUS if you configure Products and Classifications as follows:
Product: Windows Server 2012 R2
Classification: Security Updates
For a list of the files that are provided in this update, download the file information for update KB5032249.
Learn about the standard terminology that is used to describe Microsoft software updates.