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Windows 10 Enterprise LTSC 2021 known issues and notifications

Find information on known issues and the servicing status for Windows 10 Enterprise LTSC 2021 and Windows 10 IoT Enterprise LTSC 2021. For immediate help with Windows update issues, click here if you are using a Windows device to open the Get Help app or go to support.microsoft.com. Follow @WindowsUpdate on X for Windows release health updates. If you are an IT administrator and want to programmatically get information from this page, use the Windows Updates API in Microsoft Graph.

Current status as of May 2, 2025

Windows 10 Enterprise LTSC 2021 and Windows 10 IoT Enterprise LTSC 2021 will have mainstream support until January 12, 2027. 
 
Windows 10, version 21H2 Home and Pro editions reached end of servicing on June 13, 2023. Education and Enterprise editions reached end of servicing on June 11, 2024. Devices running these editions do not receive security updates containing protections from the latest security threats. 
 
As always, we recommend that you upgrade eligible devices to Windows 11. For information about servicing timelines and lifecycle, see Windows 11 release information, Windows 10 release information, Windows Lifecycle FAQ, and Microsoft Lifecycle Policy search tool
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    Known issues

    See open issues, content updated in the last 30 days, and information on safeguard holds. To find a specific issue, use the search function on your browser (CTRL + F for Microsoft Edge).

    SummaryOriginating updateStatusLast updated
    Some devices might fail to shut down or hibernate
    This issue affects some Secure Launch-capable PCs with Virtual Secure Mode enabled after installing Jan '26 updates.
    OS Build 19044.6809
    KB5073724
    2026-01-13
    Resolved
    2026-02-10
    10:13 PT

    Issue details

    January 2026

    Some devices might fail to shut down or hibernate

    StatusOriginating updateHistory
    Resolved OS Build 19044.6809
    KB5073724
    2026-01-13
    Resolved: 2026-02-10, 10:13 PT
    Opened: 2026-01-15, 18:33 PT

    After installing Windows updates released on or after January 13, 2026 (KB5073724), some Secure Launch-capable PCs with Virtual Secure Mode (VSM) enabled are unable to shut down or enter hibernation. Instead, the device restarts. This issue does not affect devices with AMD or ARM64 processors and is limited to the affected platforms listed below.

    Resolution: This issue was resolved by Windows updates released February 10, 2026 (), and updates released after that date. We recommend you install the latest update for your device as it contains important improvements and issue resolutions, including this one.

    Affected platforms:

    • ​Client: Windows 11, version 23H2; Windows 10, version 22H2; Windows 10 Enterprise LTSC 2021; Windows 10 Enterprise LTSC 2019
    • ​Server: Windows Server 2022; Windows Server 2019
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