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.NET Framework 3.5 / 4.8.1 .NET Framework 3.5 / 4.8.1 Update
Patch Tuesday

KB5054693

KB5054693: Cumulative update for .NET Framework, versions 3.5 and 4.8.1, on Windows Server 2022, April 2025. WPF printing memory errors and UNC file access addressed

In short

The update addresses a WPF printing issue involving large numbers of pages and a .NET file and directory API issue on UNC shares. A restart might be needed if affected files are in use.

Does it affect you? Applies to: Windows Server 2022 devices with .NET Framework 3.5 or 4.8.1 installed.

File version
2.0.50727.9179 · 4.8.9305.0
Restart
Required

What changes

Fixes 2 changes

WPF

Verified in package

For: Applications that print large numbers of pages

  • The update addresses memory errors that can interrupt printing large numbers of pages in WPF apps.1
    Addresses an issue with printing large numbers of pages due to an OutOfMemory exception.

.NET Fundamentals

For: Applications that use file and directory APIs on UNC shares

  • The update addresses an issue affecting apps that use file and directory APIs on UNC shares.2
    Addresses an issue where System.IO APIs are used to 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
KB5046264
Replaced by
KB5062061
VersionFile versionChannel
3.5 2.0.50727.9179 General availability
4.8.1 4.8.9305.0 General availability

Security

No vulnerabilities are listed for this update.

Downloads (Microsoft Update Catalog)

x64 Windows Server 2022
72.3 MB
windows10.0-kb5054693-x64-ndp481.msu Main update · KB5054693 SHA-1: e81e514f…4a1b2b

Updated components

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

Top changed componentsFiles
WPF24
.NET runtime (CLR)12

Verified in package: changed files confirm WPF.

Sources

Updated
Cited passages from Microsoft's official notes (2)
  1. 1. Addresses an issue with printing large number of pages due to an OutOfMemory exception. support.microsoft.com
  2. 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