Applies To.NET

Revised July 7, 2025: Updated 'How to get this update' section. 

Release Date:October 26, 2023

Version:.NET Framework 3.5 and 4.8.1

Summary

This article describes the security and Cumulative Update for 3.5 and 4.8.1 for Windows 11, version 22H2.

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.

  • 5031817 Description of the Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 (KB5031817)

How to get this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

No

See note

Windows Update for Business

No

See note

Microsoft Update Catalog

No

See note

Windows Server Update Services (WSUS)

No

See note

Note: This update is no longer available. At this time, no functional issues have been reported with this update. To ensure your device continues to receive the latest security updates and quality improvements, we recommend installing the most recent cumulative update.

How to obtain help and support for this update

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