February 29, 2024—KB5034843 (OS Build 19045.4123) Preview

^11/17/20

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 10, version 22H2, see its update history page.

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Highlights

New! Using Windows share, you can now directly share URLs to apps like WhatsApp, Gmail, Facebook, and LinkedIn. Sharing to X (formerly Twitter) is coming soon.
This update affects games you install on a secondary drive. Now, they remain installed on the drive.
This update affects the Windows Backup app. It will no longer show on the user interface in regions where the app is not supported. To learn more, see KB5032038.

Improvements

Important: Use EKB KB5015684 to update to Windows 10, version 22H2.

This non-security update includes quality improvements. When you install this KB:

This update addresses an issue that affects Azure Virtual Desktop sessions. There are delays when you sign in.
This update addresses an issue that affects Azure Virtual Desktop virtual machines. At random, they restart. This occurs because of an access violation in lsass.exe.
This update addresses an issue that affects Windows Hello for Business. You cannot use it to authenticate to Microsoft Entra ID on certain apps. This occurs when you use Web Access Management (WAM).
This update addresses an issue that affects Microsoft Edge. The UI is wrong for Internet Options Data Settings.
This update addresses an issue that affects the Japanese Input Method Editor (IME). It fails to work for custom desktops.
This update addresses an issue that affects Remote Desktop Web Authentication. You might not be able to connect to sovereign cloud endpoints.

If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.

Windows 10 servicing stack update - 19045.4106

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.

Symptom	Workaround
Windows devices using more than one (1) monitor might experience issues with desktop icons moving unexpectedly between monitors or other icon alignment issues when attempting to use Copilot in Windows (in preview).	We are gradually rolling out a new Copilot experience for devices with KB5039299or later updates installed. This new experience will address this issue. KB5039299 was released on June 25, 2024, and you can expect to receive the new Copilot experience sometime from now until the next few months.
Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.	We are gradually rolling out a new Copilot experience for devices with KB5039299 or later updates installed. This new experience will address this issue. KB5039299 was released on June 25, 2024, and you can expect to receive the new Copilot experience sometime from now until the next few months.
After you install KB5034203 (dated 01/23/2024) or later updates, some Windows devices that use the DHCP Option 235 to discover Microsoft Connected Cache (MCC) nodes in their network might be unable to use those nodes. Instead, these Windows devices will download updates and apps from the public internet. IT administrators also see increased download traffic on their internet routes. Those of you who use the Home edition of Windows are not likely to experience this issue. MCC and DHCP Option 235 are typically used in enterprise environments.	This issue is addressed in KB5040525.

Symptom

Workaround

Windows devices using more than one (1) monitor might experience issues with desktop icons moving unexpectedly between monitors or other icon alignment issues when attempting to use Copilot in Windows (in preview).

We are gradually rolling out a new Copilot experience for devices with KB5039299or later updates installed. This new experience will address this issue.

KB5039299 was released on June 25, 2024, and you can expect to receive the new Copilot experience sometime from now until the next few months.

Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.

We are gradually rolling out a new Copilot experience for devices with KB5039299 or later updates installed. This new experience will address this issue.

KB5039299 was released on June 25, 2024, and you can expect to receive the new Copilot experience sometime from now until the next few months.

After you install KB5034203 (dated 01/23/2024) or later updates, some Windows devices that use the DHCP Option 235 to discover Microsoft Connected Cache (MCC) nodes in their network might be unable to use those nodes. Instead, these Windows devices will download updates and apps from the public internet. IT administrators also see increased download traffic on their internet routes.

Those of you who use the Home edition of Windows are not likely to experience this issue. MCC and DHCP Option 235 are typically used in enterprise environments.

This issue is addressed in KB5040525.

How to get this update

Before installing this update

Microsoft now 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.

Prerequisite:

Based on your installation scenario, choose one of the following:

For offline OS image servicing:

If your image does not have the March 22, 2022 (KB5011543) or later LCU, you must install the special standalone May 10, 2022 SSU (KB5014032) before installing this update.
For Windows Server Update Services (WSUS) deployment or when installing the standalone package from Microsoft Update Catalog:

If your devices do not have the May 11, 2021 (KB5003173) or later LCU, you must install the special standalone August 10, 2021 SSU (KB5005260) before installing this update.

Install this update

Release Channel	Available	Next Step
Windows Update or Microsoft Update	Yes	Go to Settings > Update & Security > Windows Update. In the Optional updates available area, you’ll find the link to download and install the update.
Windows Update for Business	No	None. These changes will be included in the next security update to this channel.
Microsoft Update Catalog	Yes	To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)	No	You can import this update into WSUS manually. See the Microsoft Update Catalog for instructions.

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 5034843.

For a list of the files that are provided in the servicing stack update, download the file information for the SSU - version 19045.4106.

February 29, 2024—KB5034843 (OS Build 19045.4123) Preview

Highlights

Improvements

Windows 10 servicing stack update - 19045.4106

How to get this update

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Highlights

Improvements

Windows 10 servicing stack update - 19045.4106

Known issues in this update

How to get this update

Need more help?

Want more options?

Was this information helpful?

Thank you for your feedback!