The Update BureauKB5041951: Cumulative update for .NET Framework, version 4.8, on Windows 10 1607 and Windows Server 2016, August 2024. zlib and UI automation rendering issues addressed
The .NET Framework 4.8 update addresses reliability issues involving zlib, UI automation, binary serialization, ASP.NET WebForms, and Visual Studio. It adds no new security improvements.
Does it affect you? Applies to: Devices running Windows 10, version 1607, or Windows Server 2016 with .NET Framework 4.8 installed.
What changes
Fixes 5 changes
.NET Libraries
For: Applications using .NET Framework
- The update addresses an issue with updating the zlib compression library.1
.NET Fundamentals
-
The update addresses a problem that could prevent UI automation from rendering details in ListView rows.2
The issue concerns rendering UI automation ListView sub items.
-
The update addresses an issue where changes made with BinaryFormatter could bypass the serialization binder.3
The issue involves bypassing the serialization binder with BinaryFormatter mutations.
-
The update addresses unwanted rating-related metadata in pages using the ASP.NET WebForms SmartNavigation feature.4
Removes meta tag information referencing the Recreational Software Advisory Council and the content-rating schema.
-
The update addresses a Visual Studio compilation conflict that could slow development on large ASP.NET projects.5
Avoids conflicts between design-time and debug/runtime compilation of some .NET Framework ASP.NET projects.
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
- KB5037926
- Replaced by
- KB5044021
| Version | File version | Channel |
|---|---|---|
| 4.8 | 4.8.4749.0 | General availability |
Security
No vulnerabilities are listed for this update.
Downloads (Microsoft Update Catalog)
Updated components
69 files changed since the previous update for the same versions.
| Top changed components | Files |
|---|---|
| WPF | 22 |
| .NET runtime (CLR) | 12 |
| ASP.NET | 10 |
Verified in package: changed files confirm .NET Fundamentals.
Sources
Cited passages from Microsoft's official notes (5)
-
1.
Addresses an issue to update zlib file to latest version.
support.microsoft.com -
2.
Addresses an issue to render UI automation ListView sub items.
support.microsoft.com -
3.
Addresses an issue with bypass serialization binder with binary formatter mutations.
support.microsoft.com -
4.
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 -
5.
Addresses an issue .NET Framework interaction with Visual Studio to avoid conflicts between design-time and debug/runtime compilation of some .NET Framework ASP.NET project that could result in slowed developer experience for large projects.
support.microsoft.com
Checked automatically: 8 of 8 checks passed, 5 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 4/5, 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