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.NET Framework 3.5 / 4.8 .NET Framework 3.5 / 4.8 Optional preview
Preview

KB5037724

KB5037724: Cumulative update for .NET Framework, versions 3.5 and 4.8, on Windows 10 22H2, April 2024. Earlier security protections remain included

In short

This .NET Framework preview keeps earlier security protections and includes quality and reliability improvements. Windows Update installs it automatically on Windows 10 version 22H2.

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

Restart
Required

What changes

Improvements 2 changes

Security

  • Earlier security protections remain part of this cumulative update.1

.NET Framework

  • The update includes quality and reliability improvements. The page links to articles with details.2

Technical details

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

Data sheet

Released
2024-04-23
Classification
Updates
Type
Cumulative update
Restart
Required
Replaces
KB5036580
Replaced by
KB5040370
VersionFile versionChannel
3.5 General availability
4.8 General availability

Security

No vulnerabilities are listed for this update.

Downloads (Microsoft Update Catalog)

Sources

Updated
Cited passages from Microsoft's official notes (2)
  1. 1. There are no new security improvements in this release. This update is cumulative and contains all previously released security improvements. support.microsoft.com
  2. 2. 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, 2 quoted passages · compared with Microsoft's page on Oct 20, 2026
  • Quotes found in the official pages: passed
  • Numbers found in the sources: passed
  • Vulnerabilities from the dossier only: passed
  • Links to allowed domains only: passed
  • Every official change covered: passed
  • Readable plain text: passed
  • Changes confirmed by the file list: passed
  • Sources agree: passed

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