March 11, 2025—Hotpatch public preview KB5053636 (OS Build 26100.3403)

 Improvements and fixes

The following summary outlines key issues addressed by the KB update after you install it. Also, included are available new features. The bold text within the brackets indicates the item or area of the change.

• This update fixes the issue where some x64 applications stop responding or restarts unexpectedly on Arm64 devices after installing hotpatch update KB5052105, dated February 11, 2025. You might need to restart your device after installing the 3B hotpatch update (KB5053636) to ensure the issue won’t happen again.

If you installed earlier updates, your device downloads and installs only the new updates contained in this package.

How to get this update 

Before you install this update 

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

If you are using Windows Update, the latest SSU installs with this update.

Prerequisites

1. Your device must run Windows 11, version 24H2. You must install KB5050009, dated January 14, 2025 as the baseline version for this update. This update will install on devices with KB5050009 (OS version 10.0.26100.2894) (baseline) as well as devices with the previous hotpatch update KB5052105 (OS version 10.0.26100.3107), dated February 11, 2025.

2. Turn on virtualization-based security (VBS) if not already enabled. This ensures that hotpatch updates are offered to the device. To learn more, see Memory integrity and VBS enablement.

3. ​​​​​​​Set the registry key listed below on Windows Arm64 based devices. This ensures that those devices are fully secure when you install hotpatch updates. This key stops the OS from loading Compiled Hybrid Portable Executable (CHPE) binaries.

   Key: HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management

   DWORD: HotPatchRestrictions=1

   You must restart the computer after you set this registry key. Once set, you don't need to set it again because it will persist.

Install this update

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

File information

For a list of the files that are in this update, download the file information for cumulative update 5053636.

For a list of the files that are in the servicing stack update, download the file information for the SSU (KB5052915) - version 26100.3321.