Release Date: April 9, 2024. Version: .NET Framework 3.5 and 4.8. The April 9, 2024 update for Windows Server 2022 includes security and 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.

Summary. Security Improvements. CVE-2024-21409 - .NET Framework Remote Code Execution Vulnerability. This security update addresses a remote code execution vulnerability detailed in CVE-2024-21409. .NET Framework Defense in Depth Vulnerability. This security update addresses an issue where version of the OSS zlib library is out of date.

The April 9, 2024 update for Windows 11, version 22H2 and Windows 11, version 23H2 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.

April 9, 2024. Version: .NET Framework 3.5 and 4.7.2. The April 9, 2024 update for Windows 10, version 1809 and Windows Server 2019 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.7.2. We recommend that you apply this update as part of your regular maintenance routines.

Microsoft .NET Framework 4.8.1 for Windows 10 version 21H2, Windows 10 version 22H2, Windows 11 version 21H2, Windows Server 2022 (Desktop, Azure Editions), Azure Stack 21H2 and Azure Stack 22H2 (KB5011048) - Microsoft Support.

The .NET Framework 4.6.1 web installer supports the following operating systems: Describes the .NET Framework 4.6.1 web installer for Windows 7 SP1, Windows 8, Windows 8.1, Windows 10, Windows Server 2008 R2 SP1, Windows Server 2012, and Windows Server 2012 R2.

Describes the .NET Framework 4.6.1 offline installer for Windows 7 SP1, Windows 8, Windows 8.1, Windows 10, Windows Server 2008 R2 SP1, Windows Server 2012, and Windows Server 2012 R2.

Download the Microsoft .NET Framework 4.7.1 web installer package now. For the Microsoft .NET Framework 4.7.1 (Offline Installer): Download the Microsoft .NET Framework 4.7.1 offline installer package now. For Windows RT 8.1: Download the Microsoft .NET Framework 4.7.1 package now.

Resolution: Ensure the .NET Framework 4.7.1 and this update is installed on supported platforms (list of supported platforms is provided below). .Net Framework 4.7.1 or a later update is already installed on this computer. This happens when the update is being installed on a device that has Windows 10 Fall Creators update (Version 1709) or ...

The Microsoft .NET Framework 4.5.1 (Offline Installer) is now available for the .NET Framework 4 and the .NET Framework 4.5. If your computer is not connected to the Internet, you can use the offline installer instead of the web installer to install this update.