Release Date:
January 12, 2021

Version:
.NET Framework 3.5 and 4.7.2

This update for Windows 10 includes cumulative reliability improvements in .NET Framework 3.5 and 4.7.2. 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.

This update is included in the Cumulative Update that is dated January 12, 2021. This update was previously released in the Cumulative Update that was dated November 19, 2020.

Quality and reliability improvements

WPF1

- Addressed an issue with a FailFast crash arising in apps with two threads that both load application resources.

Runtime

- Improved the clean-up process for X509Certificate2 certificates


1 Windows Presentation Foundation (WPF)

Additional information about this update

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

  • 4598499 Description of the Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10, version 1809 and Windows Server, version 2019 (KB4598499)

How to obtain and install the update

Install this update

This update will be downloaded and installed automatically from Windows Update.

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

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 4.7.2 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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