Windows 11, version 23H2 known issues and notifications

Article
10/01/2024

Find information on known issues and the status of the Windows 11, version 23H2 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. If you are an IT administrator and want to programmatically get information from this page, use the Windows Updates API in Microsoft Graph.

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Current status as of July 17, 2024

Windows 11, version 23H2, also known as the Windows 11 2023 Update, is now broadly available to all users with eligible devices who Check for updates. In addition to annual updates, devices running version 23H2 receive new features and enhancements more frequently using servicing technology.

Eligible Windows 11 Home and Pro devices that are not managed by IT departments will be automatically updated to version 23H2 when they reach, or approach, end of servicing.

If you have an eligible Windows 10 Home or Pro consumer device, you can easily update to version Windows 11, version 23H2. Open Settings > Windows Update and select Check for updates. If the update is available for your device, you will see the option to Download and install. For more details, watch this video.

NOTE: Timing of feature delivery and availability varies by market and device.

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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).

Summary	Originating update	Status	Last updated
Microsoft is investigating reports of reboot issues Some users reported devices fail to restart after trying to install the September 2024 non-security preview update	OS Build 22621.4249 KB5043145 2024-09-26	Mitigated	2024-09-30 18:21 PT
August 2024 security update might impact Linux boot in dual-boot setup devices This issue might impact devices with dual-boot setup for Windows and Linux when SBAT setting is applied	OS Build 22621.4037 KB5041585 2024-08-13	Mitigated	2024-09-20 12:41 PT

Issue details

September 2024

Microsoft is investigating reports of reboot issues

Status	Originating update	History
Mitigated	OS Build 22621.4249 KB5043145 2024-09-26	Last updated: 2024-09-30, 18:21 PT Opened: 2024-09-27, 17:30 PT

Microsoft has received some customer reports of devices restarting multiple times or becoming irresponsive with blue or green screens after trying to install the September 2024 non-security preview Windows update (KB5043145).

According to the reports, some devices automatically open the Automatic Repair tool after repeated reboot attempts. This tool tries to diagnose and resolve common issues that might prevent your device from booting properly. In some cases, BitLocker recovery can also be triggered.

This issue also causes USB and Bluetooth connections to fail in some devices. Hardware connected via USB and Bluetooth, such as keyboards, memory sticks, printers, and wireless mouses, no longer work after installing the update. In these cases, the USB Host Controller under the Device Manager displays a yellow exclamation mark.

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 and business devices that are not managed by IT departments. Restarting your Windows device might help the resolution apply to your device faster.

For enterprise-managed devices managed by IT departments that have installed the affected update and encountered this issue, IT administrators can resolve it by installing and configuring the 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:

Download for Windows 11 23H2 and Windows 11 22H2: Windows 11 22H2 KB5043145 240904_041021 Known Issue Rollback

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.

Next Steps: We are working to include the resolution in a future Windows update. Once the update with the resolution is released, organizations will not need to install and configure this Group Policy to address this issue.

Affected platforms:

Client: Windows 11, version 23H2, Windows 11, version 22H2
Server: none

August 2024

August 2024 security update might impact Linux boot in dual-boot setup devices

Status	Originating update	History
Mitigated	OS Build 22621.4037 KB5041585 2024-08-13	Last updated: 2024-09-20, 12:41 PT Opened: 2024-08-21, 18:33 PT

After installing the August 2024 Windows security update, (KB5041585) or the August 2024 preview update, you might face issues with booting Linux if you have enabled the dual-boot setup for Windows and Linux in your device. Resulting from this issue, your device might fail to boot Linux and show the error message “Verifying shim SBAT data failed: Security Policy Violation. Something has gone seriously wrong: SBAT self-check failed: Security Policy Violation.”

The August 2024 Windows security and preview updates apply a Secure Boot Advanced Targeting (SBAT) setting to devices that run Windows to block old, vulnerable boot managers. This SBAT update will not be applied to devices where dual booting is detected. On some devices, the dual-boot detection did not detect some customized methods of dual-booting and applied the SBAT value when it should not have been applied.

IMPORTANT: This known issue only occurs with the installation of the August 2024 security and preview updates. The September 2024 security update (KB5043076) and later updates do not contain the settings that caused this issue. If you install the September 2024 update, you don’t need to apply the workaround below.

Workaround:

If your Linux becomes unbootable after installing the August 2024 security or preview updates, you can recover your Linux system by following these instructions.

Important: This documentation contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, see How to back up and restore the registry in Windows. Also, note that modifying firmware settings incorrectly might prevent your device from starting correctly. Follow these instructions carefully and only proceed if you are confident in your ability to do so.

a) Disable Secure Boot:

Boot into your device’s firmware settings.
Disable Secure Boot (steps vary by manufacturer).

b) Delete SBAT Update:

Boot into Linux.
Open the terminal and run the below command:

sudo mokutil --set-sbat-policy delete

Enter your root password if prompted.
Boot into Linux once more.

c) Verify SBAT Revocations:

In the terminal, run the below command:

mokutil --list-sbat-revocations

Ensure the list shows no revocations.

d) Re-enable Secure Boot:

Reboot into the firmware settings.
Re-enable Secure Boot.

e) Check Secure Boot Status:

Boot into Linux. Run the below command:

 mokutil --sb-state

The output should be “SecureBoot enabled”. If not, retry step d).

f) Prevent Future SBAT Updates in Windows:

Boot into Windows.
Open Command Prompt as Administrator and run:

reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecureBoot\SBAT /v OptOut /d 1 /t REG_DWORD

At this point, you should now be able to boot into Linux or Windows as before. It’s a good time to install any pending Linux updates to ensure your system is secure.

NOTE: On Windows-only systems, after installing the September 2024 or later updates, you can set the registry key documented in CVE-2022-2601 and CVE-2023-40547 to ensure the SBAT security update is applied. On systems that dual-boot Linux and Windows, there are no additional steps necessary after installing the September 2024 or later updates.

Next Steps: We are working on a final resolution that will be available in a future Windows update. We recommend you install the September 2024 update or later Windows updates to avoid this issue.

Affected platforms:

Client: Windows 11, version 23H2; Windows 11, version 22H2; Windows 11, version 21H2; Windows 10, version 22H2; Windows 10, version 21H2; Windows 10 Enterprise 2015 LTSB
Server: Windows Server 2022; Windows Server 2019; Windows Server 2016; Windows Server 2012 R2; Windows Server 2012

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.

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