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.NET Framework 3.5 / 4.7.2 .NET Framework 3.5 / 4.7.2 Update
Patch Tuesday

KB5041913

KB5041913: Cumulative update for .NET Framework, versions 3.5 and 4.7.2, on Windows 10 1809 and Windows Server 2019, August 2024. Updates zlib and corrects .NET data handling and WebForms metadata

In short

The update refreshes a .NET library file and addresses two .NET issues, including unwanted metadata on some generated web pages. It contains no new security improvements.

Does it affect you? Applies to: Devices running Windows 10, version 1809, or Windows Server 2019 with .NET Framework 3.5 or 4.7.2 installed.

File version
2.0.50727.9066 · 4.7.4108.0
Restart
Required

What changes

Fixes 3 changes

.NET Libraries

  • A file used by .NET libraries is updated to its latest version.1
    Updates the zlib file to the latest version.

.NET Fundamentals

Verified in package 2 items
  • A .NET issue involving a bypass in handling serialized data is addressed.2
    Addresses an issue with bypassing the serialization binder through binary formatter mutations.
  • An affected web-page feature no longer adds certain advisory and content-rating information to pages.3
    Removes meta tag information referencing "Recreational Software Advisory Council" and the content-rating schema from the ASP.Net WebForms SmartNavigation feature.

Technical details

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

Data sheet

Released
2024-08-13
Classification
Updates
Type
Cumulative update
Restart
Required
Replaces
KB5037932
Replaced by
KB5044016
VersionFile versionChannel
3.5 2.0.50727.9066 General availability
4.7.2 4.7.4108.0 General availability

Security

No vulnerabilities are listed for this update.

Downloads (Microsoft Update Catalog)

x64 Windows 10 Enterprise LTSC 2019 / Windows Server 2019
84.5 MB
windows10.0-kb5041913-x64.msu Main update · KB5041913 SHA-1: b00cd2de…4afe07
Arm64 Windows 10 Enterprise LTSC 2019
46.7 MB
windows10.0-kb5041913-arm64.msu Main update · KB5041913 SHA-1: c8cfcbc0…e0f325
x86 Windows 10 Enterprise LTSC 2019
46.7 MB
windows10.0-kb5041913-x86.msu Main update · KB5041913 SHA-1: 22f69135…0f678f

Updated components

106 files changed since the previous update for the same versions.

Top changed componentsFiles
WPF33
.NET runtime (CLR)21
ASP.NET15

Verified in package: changed files confirm .NET Fundamentals.

Sources

Updated
Cited passages from Microsoft's official notes (3)
  1. 1. Addresses an issue to update zlib file to latest version. support.microsoft.com
  2. 2. Addresses an issue with bypass serialization binder with binary formatter mutations. support.microsoft.com
  3. 3. Addresses an issue to remove meta tag information referencing "Recreational Software Advisory Council" and the content-rating schema from ASP.Net WebForms SmartNavigation feature. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 3 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 4/5, 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