KB5040370: Cumulative update for .NET Framework, versions 3.5 and 4.8, on Windows 10 22H2, June 2024. Quality and reliability updates for .NET

Includes cumulative .NET Framework updates for Windows 10 version 22H2. The page points to separate articles for the quality and reliability details.

Does it affect you? Applies to: Devices running Windows 10 version 22H2 with .NET Framework 3.5 and 4.8 or 4.8.1.

What changes

This update includes quality and reliability improvements for .NET Framework 3.5 and 4.8; the page links to an article with details.¹

This update includes quality and reliability improvements for .NET Framework 3.5 and 4.8.1; the page links to an article with details.¹

Data sheet · Security · Downloads · Components Click to collapse or expand

Version	File version	Channel
3.5		General availability
4.8		General availability

No vulnerabilities are listed for this update.

Arm64 Windows 10, version 22H2

45.3 MB

Updated Oct 27, 2026

Cited passages from Microsoft's official notes (1)

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

Checked automatically: 8 of 8 checks passed, 1 quoted passage · compared with Microsoft's page on Oct 20, 2026

A second AI read the text against the sources: correctness 5/5, clarity 5/5, completeness 4/5. How we work

Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake