Windows 10, version 21H2

Find information on known issues and the status of the Windows 10, version 21H2 rollout. For immediate help with Windows update issues, use the Get Help app in Windows or go to Follow @WindowsUpdate on X (formerly Twitter) for Windows release health updates.

Current status as of April 13, 2023 (PT)

On June 13, 2023, Home, Pro, Pro Education and Pro for Workstations editions of Windows 10, version 21H2 will reach end of servicing. The upcoming June 2023 security update, to be released on June 13, 2023, will be the last update available for this version. After this date, devices running this version will no longer receive monthly security and preview updates containing protections from the latest security threats.

To help keep you protected and productive, Windows Update will automatically initiate a feature update for Windows 10 consumer devices and non-managed business devices that are at, or within several months of reaching end of servicing. This keeps your device supported and receiving monthly updates that are critical to security and ecosystem health. For these devices, you will be able to choose a convenient time for your device to restart and complete the update.

As always, we recommend that you update your devices to the latest version of Windows 10, or upgrade eligible devices to Windows 11. For detailed information, see the entry for Windows 10, version 21H2 end of servicing (Home & Pro) at the lifecycle page. For information about servicing timelines and lifecycle, see Windows 10 release informationWindows 11 release informationLifecycle FAQ - Windows, and Microsoft Lifecycle Policy search tool.

    Known issues

    See open issues, issues resolved 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
    Apps deployed via ClickOnce might prompt for installation when opened
    Apps which were deployed using ClickOnce might begin to prompt for installation even though they're already installed.
    OS Build 19044.3324
    16:37 PT
    Devices with locale set to Croatia might not utilize the expected currency
    This can affect applications which retrieve the device's currency for purchases or other transactions

    14:24 PT

    Issue details

    August 2023

    Apps deployed via ClickOnce might prompt for installation when opened

    StatusOriginating updateHistory
    ResolvedOS Build 19044.3324
    Resolved: 2023-09-13, 16:37 PT
    Opened: 2023-08-13, 18:39 PT

    After installing KB5029244 or later updates, apps which were deployed using ClickOnce might begin to prompt for installation even when the ClickOnce apps are already installed and marked as “trusted”.

    Workaround: To temporarily workaround the issue, uninstall the impacted ClickOnce Application and reinstall the application again.

    Resolution: This issue is resolved using Known Issue Rollback (KIR). Please note that it might take up to 24 hours for the resolution to propagate automatically to consumer devices and non-managed business devices. Restarting your Windows device might help the resolution apply to your device faster. For enterprise-managed devices that have installed an affected update and encountered this issue can be resolved by installing and configuring a special Group Policy. The special Group Policy can be found in Computer Configuration -> Administrative Templates -> <Group Policy name listed below>.

    For information on deploying and configuring these special Group Policy, please see How to use Group Policy to deploy a Known Issue Rollback.

    Group Policy downloads with Group Policy name:

    Important: You will need to install and configure the Group Policy for your version of Windows to resolve this issue.

    Affected platforms:

    • ​Client: Windows 10, version 22H2; Windows 10, version 21H2
    • ​Server: None

    February 2023

    Devices with locale set to Croatia might not utilize the expected currency

    StatusOriginating updateHistory

    Last updated: 2023-02-23, 14:24 PT
    Opened: 2023-02-23, 13:22 PT

    The correct default currency might not display or be used in Windows devices which have locale set to Croatia. This can affect applications which retrieve the device's currency for purchases or other transactions. 

    Earlier this year, Croatia joined the Eurozone, changing its currency from the Kuna to Euro. Windows Locale data for Croatia will be updated for this change in the short term.

    Workaround: Changing the currency in Windows can help. This can be accomplished via the Windows Control Panel.

    1. ​Open the "Windows Region" settings. This can be done in one of the following ways:
      1. ​Open "Control Panel" from the start menu and select "Change date, time, or number formats" under "Clock and Region"
      2. ​On your keyboard, press and hold the Windows key, then press the letter R. This will open the "Run" window. Type INTL.CPL into the Open field,
    2. ​In the Region settings, choose one of the 2 locales for Croatia:
      1. Croatian (Bosnia & Herzegovina)
      2. Croatian (Croatia)
    3. ​In this same window, click the "Additional settings" button. Once there, click the "Currency" tab.
    4. ​Change the currency symbol from "KN" to Euro, ""

    Additional information can be seen here: Currency formatting - Globalization | Microsoft Learn.

    Manually changing currency might also be an option in some applications. Although this won't change the device’s default currency, this could allow usage of the application with the desired currency preference. Some applications might not allow this manual change. Please view the settings and documentation for your applications.

    Next steps: We are working on a resolution and will provide an update in an upcoming release.

    Affected platforms:

    • ​Client: Windows 11, version 22H2; Windows 10, version 22H2; Windows 11, version 21H2; Windows 10, version 21H2; Windows 10, version 20H2; Windows 10, version 1809; Windows 10 Enterprise LTSC 2019; Windows 10 Enterprise LTSC 2016; Windows 10, version 1607; Windows 10 Enterprise 2015 LTSB
    • ​Server: Windows Server 2022; Windows Server, version 20H2; Windows Server, version 1809; Windows Server 2019; Windows Server 2012 R2; Windows Server 2012; Windows Server 2008 R2 SP1; Windows Server 2008 SP2

    Report a problem with Windows updates

    To report an issue to Microsoft at any time, use the Feedback Hub app. To learn more, see Send feedback to Microsoft with the Feedback Hub app

    Need help with Windows updates?

    Search, browse, or ask a question on the Microsoft Support Community. If you are an IT pro supporting an organization, visit Windows release health on the Microsoft 365 admin center for additional details.

    For direct help with your home PC, use the Get Help app in Windows or contact Microsoft Support. Organizations can request immediate support through Support for business.

    View this site in your language

    This site is available in 11 languages: English, Chinese Traditional, Chinese Simplified, French (France), German, Italian, Japanese, Korean, Portuguese (Brazil), Russian, and Spanish (Spain). All text will appear in English if your browser default language is not one of the 11 supported languages. To manually change the display language, scroll down to the bottom of this page, click on the current language displayed on the bottom left of the page, and select one of the 11 supported languages from the list.