This Hotpatch update for Windows 11, version 25H2 and 24H2 (KB5077212), improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For information on Windows update terminology, see the different types of Windows software updates.
To view the latest updates about this release, visit the Windows release health dashboard or the update history page for Windows 11, version 25H2 and 24H2.
Announcements and messages
This section provides key notifications related to this release, including announcements, change logs, and end-of-support notices.
Windows Secure Boot certificate expiration
Note
- Windows Secure Boot certificate expiration
- Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Microsoft has been updating these certificates on consumer and non-managed business devices for the past months. Devices that haven’t received the newer certificates will continue to start and operate normally, and standard Windows updates will continue to install. We will continue to install the newer certificates via Windows updates in the coming months.
- You can check your PC status on the Windows Security app. If you are an IT administrator, follow the guidance on the Secure Boot Playbook for Windows clients and Windows Server.
Change log
| Change date | Change description |
|---|---|
| April 10, 2026 | Removed: Known issue “Reset this PC might fail with the March 2026 Hotpatch security update or later,” originally documented in the February 10, 2026 Hotpatch security update (KB5077212). |
Improvements and fixes
This Hotpatch update includes security and quality improvements.
The following summary outlines key issues addressed by this update. The bold text within the brackets indicates the item or area of the change.
- This update makes miscellaneous security improvements to internal OS functionality.
If you've already installed previous updates, your device will download and install only the new updates included in this package.
Known issues in this update
Microsoft is not currently aware of any issues with 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 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.
Install this update
To install this update, use one of the following Windows and Microsoft release channels.
| Release Channels | Available | Next step |
|---|---|---|
| Windows Update |
|
This update downloads and installs automatically from Windows update and Microsoft Update |
| Catalog |
|
See the other options. |
| Server Update Services |
|
See the other options. |
File information
For a list of the files provided in this update, download the file information for cumulative update 5077212.
For a list of the files provided in the servicing stack update, download the file information for the SSU (KB5077869) - version 26100.7839.