Windows 10, version 22H2

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Known issues

Issue details

August 2024

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

After installing the August 2024 Windows security update, released August 13, 2024 (KB5041580), 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 update applies 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.

Workaround: If you haven’t finalized the installation of the August 2024 update with a reboot yet, you can use the below opt-out registry key, so your device doesn’t install this update. You will be able to delete the registry key if you want to install future SBAT updates later on. 

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.

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

Next steps: We are investigating the issue with our Linux partners and will provide an update when more information is available.

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

July 2024

Devices might boot into BitLocker recovery with the July 2024 security update

After installing the July 2024 Windows security update, released July 9, 2024 (KB5040427), you might see a BitLocker recovery screen upon booting your device. This screen does not commonly appear after a Windows update. You are more likely to face this issue if you have the Device Encryption option enabled in Settings under Privacy & Security -> Device encryption. Resulting from this issue, you might be prompted to enter the recovery key from your Microsoft account to unlock your drive.

Resolution: This issue was resolved by Windows updates released August 13, 2024 (KB5041580), and later. We recommend you install the latest update for your device as it contains important improvements and issue resolutions, including this one.

If you install an update released August 13, 2024 (KB5041580) or later, you do not need to use a workaround for this issue. If you are using an update released before August 13, 2024, and have this issue, your device should proceed to start up normally from the BitLocker recovery screen once the recovery key has been entered. You can retrieve the recovery key by logging into the BitLocker recovery screen portal with your Microsoft account. Detailed steps for finding the recovery key are listed here: Finding your BitLocker recovery key in Windows.

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, Windows Server 2008 R2, Windows Server 2008

CrowdStrike issue impacting Windows endpoints causing an error message

Microsoft has identified an issue impacting Windows endpoints which are running the CrowdStrike Falcon agent, developed by CrowdStrike Holdings. Following updates released and delivered by CrowdStrike on July 18, 2024, devices running the Falcon agent may encounter an error message on a blue screen and experience a continual restarting state.

Affected systems might restart repeatedly and require recovery operations in order to restore normal use.

Updated July 25, 2024: Microsoft released further guidance on Windows resiliency: Best practices and the path forward. Read more about how we are working in close cooperation to improve resiliency across the Windows ecosystem and explore best practices you can use to support resiliency in your organization.

Updated July 22, 2024: Microsoft has released a third mitigation option for this issue impacting Windows clients and servers. If devices are unable to recover with the two previous options mentioned below, IT admins can use PXE to remediate. See the revised New Recovery Tool to help with CrowdStrike issue impacting Windows endpoints for detailed instructions on prerequisites and configurations to use PXE Recovery.

Updated July 21, 2024: As a follow-up to the CrowdStrike Falcon agent issue impacting Windows clients and servers, Microsoft has released an updated recovery tool with two repair options to help IT admins expedite the repair process. Based on customer feedback, this new release includes a new option for recovery using safe boot, the option to generate ISO or USB, a fix for ADK detection when the Windows Driver Kit is installed, and a fix for the USB disk size check. See the revised New Recovery Tool to help with CrowdStrike issue impacting Windows endpoints for detailed instructions on using the signed Microsoft Recovery Tool.

Updated July 20, 2024: Microsoft has released KB5042426, which contains step-by-step guidance for Windows Servers hosted on-premises that are running the CrowdStrike Falcon agent and encountering a 0x50 or 0x7E error message on a blue screen. We will continue to work with CrowdStrike to provide the most up-to-date information available on this issue. 

A new USB Recovery Tool is available to help IT admins expedite the repair process. The new tool can be found in the Microsoft Download Center. Read more about the new recovery tool and usage instructions at New Recovery Tool to help with CrowdStrike issue impacting Windows endpoints.

Updated July 19, 2024: A new Knowledge Base article, KB5042421, with additional step-by-step guidance for Windows 11 and Windows 10 clients is now available. We will continue to work with CrowdStrike to provide up-to-date mitigation information as it becomes available.

To mitigate this issue ahead of additional resolution options, you can follow these steps:

1. ​Start Windows into Safe Mode or the Windows Recovery Environment.
2. ​Navigate to the C:\Windows\System32\drivers\CrowdStrike directory
3. ​Locate the file matching “C-00000291*.sys” and delete it.
4. ​Restart the device.
5. ​Recovery of systems requires a Bitlocker key in some cases.

For Windows Virtual Machines running on Azure follow the mitigation steps in Azure status.

Additional details from CrowdStrike are available here: Statement on Windows Sensor Update - CrowdStrike Blog.

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 LTSC 2019
• ​Server: Windows Server 2022; Windows Server 2016; Windows Server 2012 R2; Windows Server 2012; Windows Server 2008 R2 SP1; Windows Server 2008 SP2

April 2024

Enterprise customers might be unable to use Microsoft Connected Cache

After installing the February 2024 Windows security update (KB5034203), released February 13, 2024, or later updates, some Windows devices which use the DHCP Option 235 for discovery of Microsoft Connected Cache (MCC) nodes in their network might be unable to use the MCC nodes. Instead, these Windows devices will download updates and apps from the public internet and IT administrators would see increased download traffic on their internet routes.

Home users of Windows are unlikely to experience this issue, as Microsoft Connected Cache configured via DHCP Option 235 is more commonly used in enterprise environments.

Workaround:

1. ​Option1: Configure Microsoft Connected Cache endpoint in DOCacheHost policy as indicated in Cache hostname. Additionally, DOCacheHostSource has to be set to 1 or removed as indicated in Cache hostname source. Note that by default, the DOCacheHost and DOCacheHostSource policies have no value.
2. ​Option2: This issue can also be mitigated using Group Policies available through our support channel. Organizations can request help through Support for business.

Resolution: This issue was resolved by Windows updates released July 23, 2024 (KB5040525), and later. We recommend you install the latest security update for your device. It contains important improvements and issue resolutions, including this one.

Affected platforms:

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

February 2023

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

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.

Resolution: This issue was resolved in updates released May 14, 2024 (KB5037768) and later. We recommend you install the latest security update for your device as it contains important improvements and issue resolutions, including this one.

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

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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