The Update BureauKB5065753: Cumulative update for .NET Framework, versions 3.5 and 4.8.1, on Windows Server 2022, September 2025. ASP.NET event logging issue addressed
In short
The update addresses ASP.NET error events that might not be logged properly and an update related to the GB18030 certificate for Chinese-language changes.
Does it affect you? Applies to: Windows Server 2022 devices with .NET Framework 3.5 or 4.8.1 installed.
Review notes Additional details from the official release notes (1) Read note
- What changes The update fixes an ASP.NET issue that caused some error events to fail to appear in the Windows Event log.
The official sources are linked at the end of the page.
What changes
Fix 1 change
ASP.NET
Verified in package
-
Some ASP.NET error events are logged properly in the Windows Event log.1
Addresses an issue where some ASP.NET error events fail to log properly in the Windows Event log.
Improvement 1 change
WPF
Verified in package
- Addresses an update for the GB18030 certificate for Chinese-language changes.2
Technical details
Data sheet · Security · Downloads · Components Click to collapse or expand
Data sheet
- Released
- 2025-09-09
- Classification
- Updates
- Type
- Cumulative update
- Restart
- Required
- Replaces
- KB5062061
- Replaced by
- KB5066134
| Version | File version | Channel |
|---|---|---|
| 3.5 | 2.0.50727.9179 | General availability |
| 4.8.1 | 4.8.9318.0 | General availability |
Security
No vulnerabilities are listed for this update.
Downloads (Microsoft Update Catalog)
x64
Windows Server 2022
72.4 MB
Updated components
60 files changed since the previous update for the same versions.
| Top changed components | Files |
|---|---|
| WPF | 22 |
| ASP.NET | 10 |
Verified in package: changed files confirm ASP.NET, WPF.
Sources
Updated
Cited passages from Microsoft's official notes (2)
-
1.
Addressed an issue in ASP.NET where some error events fail to log properly in the Windows Event log.
support.microsoft.com -
2.
Addressed an update for GB18030 certificate for Chinese language changes.
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 3/5, 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