Windows 10, version 21H1

Observe information on known issues and the status of the rollout for Windows ten, version 21H1. Looking for a specific outcome? Press CTRL + F (or Command + F if yous are using a Mac) and enter your search term(s). Want the latest Windows release wellness updates? Follow @WindowsUpdate on Twitter.

Current status as of November 3, 2021
Windows 10, version 21H1 is designated for broad deployment. Every bit e'er, we recommend that you update your devices to the latest version of Windows 10 as soon as possible to ensure that you can take reward of the latest features and avant-garde protections from the latest security threats. For more than details, run into How to become the Windows 10 May 2021 Update.
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    Known issues

    This table offers a summary of current agile problems and those issues that accept been resolved in the final thirty days.

    Summary Originating update Status Last updated
    Files might persist after resetting a Windows device
    Synced OneDrive files might not exist deleted when selecting the "Remove everything" option when the device is reset.
    OS Build 19043.1288
    KB5006670
    2021-10-12
    Confirmed
    2022-02-24
    xix:02 PT
    The text cursor in some apps might move unexpectedly when using a Japanese IME
    Text input using a Japanese IME might be entered out of order or the text cursor might move unexpectedly.
    OS Build 19043.1387
    KB5007253
    2021-11-22
    Resolved
    KB5009543
    2022-01-eleven
    10:00 PT
    Outlook search might not locate recent emails
    Searches on Outlook desktop app might fail when emails are stored locally in PST or OST files
    OS Build 19043.1387
    KB5007253
    2021-xi-22
    Resolved
    KB5010342
    2022-02-08
    10:00 PT

    Issue details

    February 2022

    Files might persist subsequently resetting a Windows device

    Status Originating update History
    Confirmed Bone Build 19043.1288
    KB5006670
    2021-10-12
    Last updated: 2022-02-24, 19:02 PT
    Opened: 2022-02-24, 17:28 PT
    When attempting to reset a Windows device with apps which take folders with reparse information, such as OneDrive or OneDrive for Business organisation, files which take been downloaded or synced locally from OneDrive might not exist deleted when selecting the "Remove everything" selection. This issue might be encountered when attempting a transmission reset initiated inside Windows or a remote reset. Remote resets might be initiated from Mobile Device Direction (MDM) or other management applications, such as Microsoft Intune or tertiary-party tools. OneDrive files which are "deject only" or have non been downloaded or opened on the device are not affected and will not persist, as the files are non downloaded or synced locally. Annotation: Some device manufacturers and some documentation might call the feature to reset your device, "Push Push button Reset", "PBR", "Reset This PC", "Reset PC", or "Fresh Start".
    Workaround: To mitigate this issue, you can do the following:
    • This issue can be prevented by signing out or unlinking OneDrive before resetting your Windows device. For instructions, see the "Unlink OneDrive" section in, Turn off, disable, or uninstall OneDrive.
    • This issue can be mitigated on devices that have already been reset past following the steps in KB5012334—Delete the Windows.old binder using Storage sense in the Settings app.
    Next steps: We are working on a resolution for an upcoming release and volition provide more than information when it is bachelor.
    Affected platforms:
    • Client: Windows eleven, version 21H2; Windows ten, version 21H2; Windows 10, version 21H1; Windows 10, version 20H2
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    January 2022

    The text cursor in some apps might move unexpectedly when using a Japanese IME

    Condition Originating update History
    Resolved KB5009543 OS Build 19043.1387
    KB5007253
    2021-11-22
    Resolved: 2022-01-eleven, 10:00 PT
    Opened: 2022-01-04, 17:29 PT
    Afterward installing KB5007253, text input using a Japanese IME might be entered out of gild or the text cursor might move unexpectedly in apps that employ the multibyte character set up (MBCS). This result affects both the Microsoft Japanese IME and third-political party Japanese IMEs.
    Resolution: This issue was resolved in updates released January 11, 2022 ( KB5009543) and later. We recommend yous install the latest security update for your device. Currently, the latest security update was released on February 8, 2022 and is the recommended option. It contains important improvements and problems resolutions, including this one. If you install an update released January 11, 2022 ( KB5009543) or subsequently, you practise non need to use a Known Upshot Rollback (KIR) or a special Group Policy to resolve this effect. If you lot are using an update released before Jan 11, 2022, you can resolve this result using KIR. For enterprise-managed devices that have installed an afflicted update and encountered this result, it tin be resolved past installing and configuring a special Group Policy (preferred). Important Verify that yous are using the right Group Policy for your version of Windows.
    Group Policy:
    • Windows 11, version 21H2
    • Windows Sever 2022
    • Windows ten, version 2004, Windows 10, version 20H2 and Windows 10, version 21H1
    Affected platforms:
    • Client: Windows xi, version 21H2; Windows 10, version 21H2; Windows 10, version 21H1; Windows ten, version 20H2
    • Server: Windows Server 2022
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    Outlook search might not locate recent emails

    Status Originating update History
    Resolved KB5010342 OS Build 19043.1387
    KB5007253
    2021-11-22
    Resolved: 2022-02-08, x:00 PT
    Opened: 2022-01-19, xv:40 PT
    Recent emails might not announced in search results on Outlook desktop app on Windows 11. This upshot is related to emails which have been stored locally in a PST or OST files. Information technology might affect POP and IMAP accounts, as well every bit Microsoft Exchange and Microsoft 365 hosted accounts. If the default search in the Outlook app is set to server search, the issue will only affect the advanced search.
    Workaround: To mitigate the issue, you can disable Windows Desktop Search which will crusade Outlook to use its built-in search. For instructions, see Outlook Search non showing recent emails later on Windows update KB5008212.
    Resolution: This issue was resolved in KB5010342, released February 8, 2022. If y'all install an update released February viii, 2022 ( KB5010342) or afterwards, you practice not need to utilise a Known Issue Rollback (KIR) or a special Grouping Policy to resolve this consequence. If y'all are using an update released earlier Feb 8, 2022, you can resolve this result using KIR. For enterprise-managed devices that take installed an affected update and encountered this upshot, information technology tin can be resolved by installing and configuring a special Group Policy. Of import Verify that you are using the right Group Policy for your version of Windows.
    Grouping Policy for KIR:
    • Windows x, version 20H2, Windows ten, version 21H1 and Windows 10, version 21H2
    • Windows ten, version 1809, Windows 10 Enterprise LTSC 2019, and Windows Server 2019
    Afflicted platforms:
    • Client: Windows 11, version 21H2; Windows ten, version 21H2; Windows 10, version 21H1; Windows ten, version 20H2; Windows ten, version 1809; Windows 10 Enterprise LTSC 2019
    • Server: Windows Server, version 20H2; Windows Server, version 1809; Windows Server 2019
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