The Update BureauKB5055170: Cumulative update for .NET Framework, version 4.8, on Windows 10 1607 and Windows Server 2016, April 2025. Large print jobs and network-share file access addressed
In short
The update addresses .NET Framework 4.8 reliability issues involving large print jobs and file and directory operations on network shares. It contains 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 2 changes
WPF
Verified in package
-
The update addresses an issue that can cause an out-of-memory error when printing a large number of pages.1
Addresses an
OutOfMemoryexception during large print jobs.
.NET Fundamentals
-
The update addresses an issue with .NET apps using file and directory operations on network shares.2
Addresses an issue when
System.IOAPIs operate on files and directories on UNC shares.
Technical details
Data sheet · Security · Downloads · Components Click to collapse or expand
Data sheet
- Released
- 2025-04-08
- Classification
- Updates
- Type
- Cumulative update
- Restart
- Required
- Replaces
- KB5046266
- Replaced by
- KB5062064
| Version | File version | Channel |
|---|---|---|
| 4.8 | 4.8.4785.0 | General availability |
Security
No vulnerabilities are listed for this update.
Downloads (Microsoft Update Catalog)
x64
Windows 10 Enterprise LTSB 2016 / Windows Server 2016
60.8 MB
x86
Windows 10 Enterprise LTSB 2016
33.5 MB
Updated components
55 files changed since the previous update for the same versions.
| Top changed components | Files |
|---|---|
| WPF | 24 |
| .NET runtime (CLR) | 12 |
Verified in package: changed files confirm WPF.
Sources
Updated
Cited passages from Microsoft's official notes (2)
-
1.
Addresses an issue with printing large number of pages due to an OutOfMemory exception.
support.microsoft.com -
2.
Addresses an issue where System.IO APIs are used to operate on files and directories on UNC shares.
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 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