April 23, 2024—KB5036979 (OS Build 19045.4355) 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.

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

Highlights

New! This update starts the rolls out of account-related notifications for Microsoft accounts in Settings > Home. A Microsoft account connects Windows to your Microsoft apps. The account also backs up all your data and helps you to manage your subscriptions. You can also add extra security steps to keep you from being locked out of your account. This feature displays notifications across the Start menu and Settings. You can manage your Settings notifications in Settings > Privacy & security > General.
New! This update affects Widgets on the lock screen. They are more reliable and have improved quality. This update also supports more visuals and a more customized experience for you.
This update addresses an issue that affects some wireless earbuds. Bluetooth connections are not stable. This occurs on devices that have firmware from April 2023 and later.
This update makes some changes to Windows Search. It is now more reliable, and it is easier to find an app after you install it. This update also gives you a personalized app search experience.

Improvements

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

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

New! Starting April 23, 2024, the LCU will no longer have the reverse differentials. The client will generate the reverse update data. This change will help to reduce the LCU package size by about 20%. This change also offers a few advantages. It:
- Reduces bandwidth usage
- Provides faster downloads
- Minimizes network traffic
- Improves performance on slow connections.
  
  To learn more, go to Reducing Windows 10, version 22H2 Monthly LCU package size.
This update addresses an issue that affects apps licensing. Because of this, Copilot in Windows (in preview) does not work as you expect.
This update addresses an issue that occurs when your device resumes from Modern Standby. You might get the stop error, “0x9f DRIVER_POWER_STATE_FAILURE.”
This update addresses a race condition that might stop a machine from starting up. This occurs when you set up a bootloader to start up multiple OSes.
This update affects media allocations. It improves their memory granularity for some hardware setups. This lowers overcommitment. Also, performance is more efficient.
This update addresses an issue that affects an accelerator backing store management path. A memory leak occurs that affects some devices.
This update makes Country and Operator Settings Asset (COSA) profiles up to date for some mobile operators.
This update addresses an issue that affects the container networking Address Resolution Protocol (ARP). It returns the wrong Virtual Subnet ID (VSID) for external ports.
This update affects hypervisor-protected code integrity (HVCI). It accepts drivers that are now compatible.
This update includes quarterly changes to the Windows Kernel Vulnerable Driver Blocklist file, DriverSiPolicy.p7b. It adds to the list of drivers that are at risk for Bring Your Own Vulnerable Driver (BYOVD) attacks.
This update addresses an issue that affects Protected Process Light (PPL) protections. You can bypass them.
This update addresses an issue that affects the Distributed Transaction Coordinator (DTC). A memory leak occurs when it retrieves mappings.
This update addresses an issue that affects Windows Local Administrator Password Solution (LAPS). Its Post Authentication Actions (PAA) do not occur at the end of the grace period. Instead, they occur at restart.

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 - 19045.4351

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).	To prevent users from encountering this issue, Copilot in Windows (in preview) might not be available on devices that have been used or are currently being used in a multimonitor configuration. We are working on a resolution and will provide an update in an upcoming release.
Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.	To access Copilot in Windows, make sure your taskbar is positioned horizontally on the top or bottom of your screen. We are working on a resolution and will provide an update in an upcoming release.
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.	Option 1: Configure Microsoft Connected Cache endpoint in DOCacheHost policy as indicated in Cache hostname. Additionally, DOCacheHostSourcehas to be set to 1or removed as indicated in Cache hostname source. By default, the DOCacheHost and DOCacheHostSource policies have no value. Option 2: You can mitigate this issue using Group Policies available through our support channel. Organizations can request help at Support for business. We are working on a resolution and will provide an update in an upcoming release.
After installing this update, you might be unable to change your user account profile picture. When attempting to change a profile picture by selecting the button Start> Settings > Account > Your info and, under Create your picture, clicking on Browse for one, you might receive an error message with error code 0x80070520.	We are working on a resolution and will provide an update in an upcoming release.
Windows devices might face VPN connection failures after installing the update dated April 9, 2024, or later.	Windows support: Home PC: If you need support with your personal or family account, use the Get help app in Windows. Enterprise devices: Request help for your organization through Support for business. We are working on a resolution and will provide an update in an upcoming release.

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).

To prevent users from encountering this issue, Copilot in Windows (in preview) might not be available on devices that have been used or are currently being used in a multimonitor configuration.