Windows 11, version 21H2 known issues and notifications

Find information on known issues and the status of the Windows 11, version 21H2 rollout. 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 (formerly Twitter) for Windows release health updates.

Current status as of October 10, 2023

As of October 10, 2023, Home and Pro editions of Windows 11, version 21H2 have reached end of servicing. The October 2023 security update, released on October 10, 2023, is the last update available for these editions. After this date, devices running these editions will no longer receive monthly security and preview updates containing protections from the latest security threats. Enterprise, Education, IoT Enterprise, and Enterprise multi-session editions for this version will reach end of servicing on October 8, 2024 and will receive security updates until then.

To help keep you protected and productive, Windows Update will automatically initiate a feature update for Windows 11 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 11. For detailed information, see the Windows 11, version 21H2 end of servicing (Home & Pro) lifecycle page. For information about servicing timelines and lifecycle, see Windows 11 release informationLifecycle FAQ - Windows, and Microsoft Lifecycle Policy search tool.

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 apps might fail to playback, record, or capture video
Apps and cameras using WVC1 codec might fail to function as expected.
OS Build 22000.30000
KB5028245
2023-07-25
Resolved
KB5034766
2024-02-20
14:01 PT
The January 2024 Windows RE update might fail to install
WinRE is the Windows Recovery Environment. The update fails if there's insufficient free space in the WinRE partition.
N/A
KB5034440
2024-01-09
Mitigated
2024-02-09
17:04 PT
BitLocker might incorrectly receive a 65000 error in MDMs
"Requires Device Encryption" might incorrectly report as an error in some managed environments.
N/A

Mitigated
2023-10-31
10:06 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
N/A

Confirmed
2023-10-31
10:06 PT
Compatibility issues with Intel Smart Sound Technology drivers and Windows 11
Windows 11 devices with the affected Intel SST driver might receive an error with a blue screen.
N/A

Mitigated External
2023-10-31
10:06 PT

Issue details

January 2024

The January 2024 Windows RE update might fail to install

StatusOriginating updateHistory
MitigatedN/A
KB5034440
2024-01-09
Last updated: 2024-02-09, 17:04 PT
Opened: 2024-01-12, 14:10 PT

Devices attempting to install the January 2024 Windows Recovery Environment update ( KB5034440) might display an error related to the size of the Recovery Environment's partition. The Windows Recovery Environment (WinRE) is used to repair or recover from issues affecting Windows.

Resulting from this error, the following message might be displayed.

  • ​"0x80070643 - ERROR_INSTALL_FAILURE"

Important: If your Windows device does not have a recovery environment configured, you do not need this update ( KB5034440). In this case, the error can be ignored.

To determine whether your device has a recovery environment configured, inspect the WinRE status by following these steps:

  1. ​Open a Command Prompt window (cmd) as admin.
  2. ​To check the WinRE status, run reagentc /info. If the WinRE is configured, a "Windows RE status" field will appear in the output, with value "Enabled". If WinRE is not configured, this field will have the value "Disabled".

Workaround: It might be necessary to increase the size of the WinRE partition in order to avoid this issue and complete the installation. Note that 250 megabytes of free space is required in the recovery partition. Devices which do not have sufficient free space in the recovery partition can use a script to extend the partition size. A sample script has been provided in the documentation for adding an update package to WinRE, Extend the Windows RE Partition. Guidance to manually change the WinRE partition size can additionally be found in KB5028997: Instructions to manually resize your partition to install the WinRE update.

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

Affected platforms:

  • ​Client: Windows 11, version 21H2; Windows 10, version 22H2; Windows 10, version 21H2
  • ​Server: Windows Server 2022

October 2023

BitLocker might incorrectly receive a 65000 error in MDMs

StatusOriginating updateHistory
MitigatedN/A

Last updated: 2023-10-31, 10:06 PT
Opened: 2023-10-09, 14:51 PT

Using the FixedDrivesEncryptionType or SystemDrivesEncryptionType policy settings in the BitLocker configuration service provider (CSP) node in mobile device management (MDM) apps might incorrectly show a 65000 error in the "Require Device Encryption" setting for some devices in your environment. Affected environments are those with the “Enforce drive encryption type on operating system drives” or "Enforce drive encryption on fixed drives" policies set to enabled and selecting either "full encryption" or "used space only". Microsoft Intune is affected by this issue but third-party MDMs might also pe affected. Important: This issue is a reporting issue only and does not affect drive encryption or the reporting of other issues on the device, including other BitLocker issues.

Workaround: To mitigate this issue in Microsoft Intune, you can set the “Enforce drive encryption type on operating system drives” or "Enforce drive encryption on fixed drives" policies to not configured.

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

Affected platforms:

  • ​Client: Windows 11, version 23H2; Windows 11, version 22H2; Windows 10, version 22H2; Windows 11, version 21H2; Windows 10, version 21H2; Windows 10 Enterprise LTSC 2019
  • ​Server: None

July 2023

Some apps might fail to playback, record, or capture video

StatusOriginating updateHistory
Resolved KB5034766OS Build 22000.30000
KB5028245
2023-07-25
Resolved: 2024-02-13, 10:00 PT
Opened: 2023-07-25, 14:47 PT

After installing KB5028245 or later updates, some apps might fail to playback, record, or capture video when using the WVC1 codec (VC-1). Certain cameras or webcams might also fail to work if they use the WVC1 codec by default.

Resolution: This issue was resolved in updates released February 13, 2024 ( KB5034766) and later. We recommend you install the latest security update for your device. It contains important improvements and issue resolutions, including this one.

If you install an update released February 13, 2024 ( KB5034766) or later, you do not need to use a Known Issue Rollback (KIR) or a special Group Policy to resolve this issue. If you are using an update released before February 13, 2024, and have this issue, you can resolve it by installing and configuring the special Group Policy listed below. 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. You will also need to restart your device(s) to apply the group policy setting.

Affected platforms:

  • ​Client: Windows 11, version 22H2; Windows 10, version 22H2; Windows 11, version 21H2
  • ​Server: None

February 2023

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

StatusOriginating updateHistory
ConfirmedN/A

Last updated: 2023-10-31, 10:06 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 23H2; 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

November 2021

Compatibility issues with Intel Smart Sound Technology drivers and Windows 11

StatusOriginating updateHistory
Mitigated ExternalN/A

Last updated: 2023-10-31, 10:06 PT
Opened: 2021-11-15, 16:40 PT

Intel and Microsoft have found incompatibility issues with certain versions of drivers for Intel Smart Sound Technology (Intel SST) on Intel 11th Gen Core processors and Windows 11. Windows 11 devices with the affected Intel SST driver might receive an error with a blue screen. The affected driver will be named Intel® Smart Sound Technology (Intel® SST) Audio Controller under System Devices in Device Manager and have the file name IntcAudioBus.sys and a file version of 10.29.0.5152 or 10.30.0.5152. Only devices with both an Intel 11th Gen Core processors and an Intel SST driver version of 10.29.0.5152 or 10.30.0.5152 are affected by this issue.

To safeguard your upgrade experience, we have applied a compatibility hold on devices with affected Intel SST drivers from being offered Windows 11, version 23H2, Windows 11, version 22H2, or Windows 11, version 21H2 on devices with Windows 10. If your organization is using Update Compliance, the safeguard IDs are:

  • ​Windows 11, version 21H2: 36899911
  • ​Windows 11, version 23H2; Windows 11, version 22H2: 41291788

Workaround: To mitigate the safeguard, you will need to check with your device manufacturer (OEM) to see if an updated driver is available and install it. This issue is resolved by updating the Intel® Smart Sound Technology drivers to a version 10.30.00.5714 and later or 10.29.00.5714 and later. Important: Later versions refer to just the last part of the version number. For addressing this issue, 10.30.x versions are not newer than 10.29.x versions. Once you have updated to a compatible version of the Intel® Smart Sound Technology drivers, you should be able to upgrade to Windows 11. Please note, if there are no other safeguards that affect your device, it can take up to 48 hours before the upgrade to Windows 11 is offered.

Next Steps: If you encounter this safeguard hold and an updated driver is not yet available, you will need to contact your device manufacturer (OEM) for more information.

Note We recommend that you do not attempt to manually upgrade using the Update now button or the Media Creation Tool until this issue has been resolved and the safeguard removed. 

Affected platforms:

  • ​Client: Windows 11, version 23H2, Windows 11, version 22H2; Windows 11, version 21H2

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