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  • June 13, 2023—KB5027271 (Monthly Rollup)


    June 13, 2023—KB5027271 (Monthly Rollup)

    Windows Server 2012 R2 Windows Embedded 8.1 Industry Enterprise Windows Embedded 8.1 Industry Pro Less

    Release Date:



    Monthly Rollup

    REMINDER Windows 8.1 reached end of support 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.

    Windows Embedded 8.1 Industry Enterprise and Pro will reach end of support (EOS) on July 10, 2023. For more information, see Windows Embedded 8.1 Industry.

    For Windows Server 2012 R2, the end of support (EOS) date is October 10, 2023. Extended Security Updates (ESUs) will be available for purchase no later than October 2022, but available for installation after the EOS date, October 10, 2023. ESUs 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.

    Upgrade to Windows 10: FAQ Learn more about upgrading Windows Server


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

    Note For information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following article. To view other notes and messages, see the Windows 8.1 and Windows Server 2012 R2 update history home page.


    This cumulative security update includes improvements that are part of update KB5026415 (released May 9, 2023). This update also contains miscellaneous security improvements to internal Windows OS functionality. No specific issues are documented for this release.

    For more information about the resolved security vulnerabilities, please refer to the Deployments | Security Update Guide and the June 2023 Security Updates.

    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 use Windows Update, the latest SSU (KB5027574) 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.

    Learn about adding a language pack to Windows

    Install this update

    Release Channel


    Next Step

    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, Windows Embedded 8.1 Industry Enterprise, Windows Embedded 8.1 Industry Pro

    Classification: Security Updates

    File information

    For a list of the files that are provided in this update, download the file information for update KB5027271.


    Learn about the standard terminology that is used to describe Microsoft software updates.


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