August 12, 2025—KB5063880 (OS Build 20348.4052) Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time.

The August 28, 2025 update for Windows 11, version 24H2 and Microsoft server operating system version 24H2 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections. Summary Security ...

On the left side of this page, you’ll find a list of all the updates released for this version of Windows. You can also find more information about releases and any known issues. Installing the most recent update ensures that you also get any previous updates you might have missed, including any important security fixes.

To get the standalone package (s) for this update, go to the Microsoft Update Catalog website. This KB contains one or more MSU files that must be installed in order. Download all MSU files for KB5058411 from Microsoft Update Catalog and place them in the same folder (for example, C:/Packages).

The following summary outlines key issues addressed by the KB update after you install it. This update makes miscellaneous security improvements to internal OS functionality.

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.

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 makes miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.

To get the standalone package for this update, go to the Microsoft Update Catalog website. File information. For a list of the files that are provided in this update, download the file information for cumulative update. To apply this update, you must have .NET Framework 3.5 or 4.8.1 installed.

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.

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. [Display] Fixed: You might need to press the Win + P keyboard shortcut twice to switch topologies.