April 25, 2022-KB5012159 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 11
The April 25, 2022 update for Windows 11 includes cumulative reliability improvements in .NET Framework 3.5 and 4.8. 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.
There are no new security improvements in this release. This update is cumulative and contains all previously released security improvements.
Quality and reliability improvements
1Directory Services (DS)
DS1 - Addresses an issue where 3rd party .NET apps using certain System.DirectoryServices APIs crash with an Access Violation (0xC0000005).
Known issues in this updateMicrosoft is not currently aware of any issues in this update.
How to get this updateInstall this update
Release Channel Available Next Step Windows Update and Microsoft Update Yes To download and install this update, go to Settings > Update & Security > Windows Update, and then select Check for updates. Windows Update for Business No None. These changes will be included in the next security update to this channel. For more information about Windows Update for Business go to the Windows Update for Business website. 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.
For a list of the files that are provided in this update, download the file information for cumulative update.
We have released the April 2022 Cumulative Update Preview for .NET Framework with several quality and reliability improvements.
Check Windows Updates
Direct download links for KB5012159 MSU file from Microsoft Update Catalog:
Download KB5012159 MSU for Windows 11 64-bit (x64) - 47.0 MB
Download KB5012159 MSU for Windows 11 ARM64 - 47.0 MB