Win Update KB5043145 Windows 11 Cumulative Update Preview Build 22621.4249 (22H2) and 22631.4249 (23H2) - Sept. 26

UPDATE 10/8:

September 26, 2024 - KB5043145 (OS Builds 22621.4249 and 22631.4249) Preview​

07/09/24---END OF SERVICE NOTICE---

IMPORTANT Home and Pro editions of Windows 11, version 22H2 will reach end of service on October 8, 2024. Until then, these editions will only receive security updates. They will not receive non-security, preview updates. To continue receiving security and non-security updates after October 8, 2024, we recommend that you update to the latest version of Windows.

Note We will continue to support Enterprise and Education editions after October 8, 2024.

For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. For an overview of Windows 11, version 23H2, see its update history page.

Note Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.

Highlights​

Note: Below is a summary of the key issues that this update addresses when you install this KB. If there are new features, it lists them as well. The bold text within the brackets indicates the item or area of the change we are documenting.

Gradual rollout​

These might not be available to all users because they will roll out gradually.

• [Taskbar] New! You can now share local files directly from the search results that appear in the Search box on the taskbar.
  
  
  

  Share Files with Nearby Devices in Windows 11

  This tutorial will show you how to share files with nearby devices using Nearby Sharing in Windows 11. Windows Share in Windows 11 allows you to share file(s) using Nearby Sharing. Nearby sharing in Windows lets you share documents, photos, links to websites, and more with nearby devices by...

  www.elevenforum.com
  

  Share Files to Android Mobile Device from Windows 11 PC

  This tutorial will show you how to share files from your Windows 11 PC to your linked Android mobile device using Windows Share. Starting with Windows 11 build 22631.4112, you can seamlessly share files between your PC and mobile device when they are connected via Phone Link and the Link to...

  www.elevenforum.com
  

  Share File with Email Contact in Windows 11

  This tutorial will show you how to send an email to share file(s) with a contact in Windows 11. Windows Share in Windows 11 allows you to share file(s) with an email contact. If you have a desktop mail app (ex: "Outlook for Windows") installed, you can select to send an email to yourself or...

  www.elevenforum.com
  

  Share File with App in Windows 11

  This tutorial will show you how to share a file with an app in Windows 11. Windows Share in Windows 11 allows you to share file(s) with an app to send from. Starting with Windows 11 build 22631.3810, Microsoft is rolling out the ability to copy files from the Windows share window. Just click...

  www.elevenforum.com
• [Settings] New! The Delivery Optimization Settings page now matches the Windows 11 design. See Settings > Windows Update > Advanced options > Delivery Optimization.
  
  
  

  Turn On or Off Windows Update Delivery Optimization in Windows 11

  This tutorial will show you how to turn on or off allow downloads from other PCs for Delivery Optimization in Windows 11. Windows Update Delivery Optimization helps you get Windows updates and Microsoft Store apps more quickly and reliably. Windows Update Delivery Optimization works by letting...

  www.elevenforum.com
• [Windows Share] New! This update removes the search box from the Windows Share window.
• [Lock screen] New! Media controls now show in the lower part of the lock screen at its center when media is playing.
  
  
  

  Enable or Disable Media Controls in Windows 11

  This tutorial will show you how to enable or disable media controls from Google Chrome, Microsoft Edge, and/or Mozilla Firefox for your account in Windows 11. The Media controls OSD (On Screen Display) appears in Quick Settings (Win+A) and on the Lock screen (Win+L) when playing media (ex...

  www.elevenforum.com
• [Start menu] New! The "Sign out" option is now on the account manager when you open the Start menu. To change to a different user, select the ellipses (...). A list of other users appears to make it easier to switch.
  
  
  

  Sign out of Windows 11

  This tutorial will show you different ways to sign out of your account or other users in Windows 11. When you sign out of Windows, all your open windows and apps are closed, but the computer is not turned off. Another user can sign in without needing to restart the computer. References...

  www.elevenforum.com

Normal rollout​

• [Microsoft Edge] It sometimes stops responding when you use IE mode.
• [Windows identity protection] Users no longer need to enter their credentials more than once for Outlook or another encrypted email app. A user will be prompted for their PIN one time only.
• [Copilot Pro subscription] New! You can now manage your Copilot Pro subscription in Settings. Sign in to your Microsoft account and go to Settings>Accounts.
• [Task Manager] It stops responding when you switch from a high contrast theme to a normal theme.

Improvements​

Note: To view the list of addressed issues, click or tap the OS name to expand the collapsible section.

Windows 11, version 23H2​

Important: Use EKB KB5027397 to update to Windows 11, version 23H2.
This non-security update includes quality improvements. Key changes include:

• This build includes all the improvements in Windows 11, version 22H2.
• No additional issues are documented for this release.

Windows 11, version 22H2: Enterprise and Education editions​

This non-security update includes quality improvements. Below is a summary of the key issues that this update addresses when you install this KB. If there are new features, it lists them as well. The bold text within the brackets indicates the item or area of the change we are documenting.

• [IE mode] Microsoft Edge sometimes stops responding when you use IE mode.
• [Transmission Control Protocol (TCP)] There is inconsistent data between TCP_INFO_v1 and GetPerTcpConnectionEstats. File synchronization services use TCP connection performance analysis tools. This issue affects how accurate those tools are.
• [Country and Operator Settings Asset] This update brings COSA profiles up to date for certain mobile operators.
• [Outlook and other encrypted email apps] This issue prompts for your PIN each time you open an encrypted email.
• [Microsoft Defender for Endpoint] Work Folders files fail to sync when Defender for Endpoint is on.

Windows 11 servicing stack update (KB5043143) - 22621.4245 and 22631.4245​

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

Known issues in this update​

How to get this update​

Before you install this update

Microsoft combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

Install this update

To install this update, use one of the following Windows and Microsoft release channels.


If you want to remove the LCU

To remove the LCU after installing the combined SSU and LCU package, use the DISM/Remove-Package command line option with the LCU package name as the argument. You can find the package name by using this command: DISM /online /get-packages.

Running Windows Update Standalone Installer (wusa.exe) with the /uninstall switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 5043145.

For a list of the files that are provided in the servicing stack update, download the file information for the SSU (KB5043143) - versions 22621.4245 and 22631.4245.






Check Windows Updates


UUP Dump:

64-bit ISO download:

ARM64 ISO download: