Skip to the content
The Update Bureau
.NET Framework 3.5 / 4.7.2 .NET Framework 3.5 / 4.7.2 Update
Patch Tuesday

KB5037932

KB5037932: Cumulative update for .NET Framework, versions 3.5 and 4.7.2, on Windows 10 1809 and Windows Server 2019, May 2024. Concurrent .NET crashes and 32-bit response delays addressed

In short

The update addresses possible .NET runtime crashes during concurrent type queries and a response-time regression on 32-bit platforms. You must restart the computer after applying it if any affected files are in use.

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
2.0.50727.9063 · 4.7.4095.0
Restart
Required

What changes

Fixes 2 changes

CLR

  • Addresses crashes that can occur when several threads query the same managed type at the same time.1
    The issue occurs when threads concurrently query the ITypeInfo implementation of the same managed type.

.NET Libraries

  • Addresses a significant response-time slowdown on 32-bit platforms.2

Technical details

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

Data sheet

Released
2024-05-14
Classification
Updates
Type
Cumulative update
Restart
Required
Replaces
KB5034619
Replaced by
KB5039879
VersionFile versionChannel
3.5 2.0.50727.9063 General availability
4.7.2 4.7.4095.0 General availability

Security

No vulnerabilities are listed for this update.

Downloads (Microsoft Update Catalog)

x64 Windows 10 Enterprise LTSC 2019 / Windows Server 2019
78.3 MB
windows10.0-kb5037932-x64.msu Main update · KB5037932 SHA-1: 1ff5feee…07e873
Arm64 Windows 10 Enterprise LTSC 2019
44.4 MB
windows10.0-kb5037932-arm64.msu Main update · KB5037932 SHA-1: ad360ede…ac756f
x86 Windows 10 Enterprise LTSC 2019
44.4 MB
windows10.0-kb5037932-x86.msu Main update · KB5037932 SHA-1: 89525ae7…b95e8d

Updated components

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

Top changed componentsFiles
.NET runtime (CLR)18

Sources

Updated
Cited passages from Microsoft's official notes (2)
  1. 1. Addresses an issue where crashes can occur if several threads all concurrently query the ITypeInfo implementation of the same managed type. support.microsoft.com
  2. 2. Addresses an issue where 32-bit platform show a significant response time regression. 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 4/5, 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