Win Update KB5028938 Cumulative Update .NET Framework 3.5, 4.8, and 4.8.1 (21H2)

July 11, 2023 - KB5028938 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 11, version 21H2​

Summary​

This article describes the Cumulative Update for 3.5, 4.8 and 4.8.1 for Windows 11, version 21H2.

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

For a list of improvements that were released with this update, please see the article links in the Additional Information section of this article.

Known issues in this update​

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

Additional information about this update​

The following articles contain additional information about this update as it relates to individual product versions.

• 5028856 Description of the Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 11, version 21H2 (KB5028856)
• 5028850 Description of the Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 21H2 (KB5028850)

How to get 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)	Yes	This operating system update will offer, as applicable, and individual .NET Framework product updates will be installed. For more information about individual .NET Framework product updates see additional information about this update section. This update will automatically sync with WSUS if you configure as follows: Product: Windows 11, version 21H2 Classification: Updates

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July 11, 2023-KB5028938 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 11, version 21H2 - Microsoft Support

support.microsoft.com

.NET Framework July 2023 Security and Quality Rollup Updates - .NET Blog

July 2023 Security and Quality Rollup Updates for .NET Framework

devblogs.microsoft.com