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KB5036036

KB5036036: Cumulative update for .NET Framework, versions 3.5 and 4.8, on Windows 10 22H2, March 2024. ASP.NET performance and thread-pool stalls addressed

In short

Addresses an ASP.NET performance issue after the January 2024 .NET Framework update and an issue that could make thread-pool lists unresponsive on computers with multiple CPU groups.

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

File version
2.0.50727.9176 · 4.8.4712.0
Restart
Required

What changes

Fixes 2 changes

.NET Libraries

Verified in package

For: ASP.NET applications

  • Addresses an ASP.NET performance issue that occurred after installing the January 2024 .NET Framework update.1

.NET Runtime

  • Addresses an issue that could make thread-pool lists unresponsive on computers with multiple CPU groups.2

Technical details

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

Data sheet

Released
2024-03-26
Classification
Updates
Type
Cumulative update
Restart
Required
VersionFile versionChannel
3.5 2.0.50727.9176 General availability
4.8 4.8.4712.0 General availability

Security

No vulnerabilities are listed for this update.

Updated components

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

Top changed componentsFiles
WPF33
.NET runtime (CLR)18
ASP.NET15

Verified in package: changed files confirm .NET Libraries.

Sources

Updated
Cited passages from Microsoft's official notes (2)
  1. 1. Addresses a performance issue in ASP.NET applications after installing the January 2024 .NET Framework update. support.microsoft.com
  2. 2. Addresses an issue when thread pool recycled lists become unresponsive on multi-CPU-group computers. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 2 quoted passages · compared with Microsoft's page on Nov 8, 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