Applies To.NET

Release Date:November 12, 2024

Version: .NET Framework 3.5 and 4.8.1

The November 12, 2024 update for Windows Server 2022 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections.

Summary

Security Improvements

Security Feature Bypass vulnerability This security update addresses a security feature bypass vulnerability when using SecUtility.RandomByte.

Information Disclosure vulnerability This security update addresses an information disclosure vulnerability with the performance counter.

Quality and Reliability Improvements

ASP.NET

- Addresses an issue where "The type initializer for ‘System.Web.UI.Util’ threw an exception." error with design-time compilation in Visual Studio for .NET Framework ASP.Net projects.

CLR1

- Address an issue where in rare cases where an infinite loop could occur when a thread enters CLR for the first time.

- Address an issue in cases where incorrect interface call devirtualization could occur when JIT optimizations are enabled.

- Addresses an issue with out of memory exceptions during garbage collection while running applications running under job limits.

.NET Fundamentals

- Addresses an issue with .NET API UserPrincipal.GetAuthorizationGroups to retrieve the Membership of a particular user.

1Common Language Runtime (CLR)

Additional information about this update

The following articles contain additional information about this update as it relates to individual product versions.

  • 5046547 Description of the Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows Server 2022 (KB5046547)

Known issues in this update

Microsoft is not currently aware of any issues in this update.

How to get this update

Install this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

Yes

None. This update will be downloaded and installed automatically from Windows Update.

Windows Update for Business

Yes

None. This update will be downloaded and installed automatically from Windows Update.

Microsoft Update Catalog

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Windows Server Update Services (WSUS)

Yes

This individual .NET Framework product update will be installed, as applicable, by applying the operating system update. For more information about operating system updates see additional information about this update section.

File information

For a list of the files that are provided in this update, download the file information for cumulative update.

Prerequisites

To apply this update, you must have .NET Framework 3.5 or 4.8.1 installed.

Restart requirement

You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.

How to obtain help and support for this update

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