KB5028017 Cumulative Update Preview .NET Framework 3.5 and 4.8.1 (22H2)

July 26, 2023 - KB5028017 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2

The July 26, 2023 update for Windows 11, version 22H2 includes 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 Improvements

There are no new security improvements in this release. This update is cumulative and contains all previously released security improvements.

Quality and Reliability Improvements

WPF1 - Addresses an issue where XPS documents using LinkTarget aren't rendering properly.
Networking - Addresses an issue where using proxy with continuous load may lead to memory leak resulting in high memory usage, or potentially OutOfMemoryException.

1Windows Presentation Foundation (WPF)

Known issues in this update
Microsoft is not currently aware of any issues in this update.

How to get this update
Install this update

Release Channel Available Next Step
Windows Update and Microsoft Update Yes None. This update will be downloaded and installed automatically from Windows Update.
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.

File information

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

Prerequisites
To apply this update, you must have .NET Framework 3.5 or 4.8.1 installed.

Restart requirement
You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.

How to obtain help and support for this update

Help for installing updates: Windows Update FAQ

Protect yourself online and at home: Windows Security support

Local support according to your country: International Support