November 10, 2020-KB4580419 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10, version 2004, Windows Server, version 2004, Windows 10, version 20H2, and Windows Server, version 20H2

Applies to: .NET Framework

This update for Windows 10, version 2004, Windows Server, version 2004, Windows 10, version 20H2, and Windows Server, version 20H2 includes cumulative reliability improvements in .NET Framework 3.5 and 4.8. 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.

Quality and reliability improvements


WPF1

- Addressed a regression from a previous update, arising when two HostVisual elements disconnect at the same time.

- Addressed a crash and/or hang when typing into a TextBox in a WPF app, when the OS feature "use text cursor indicator" is enabled.

SQL

- Addressed an issue in System.Data.SqlClient where querying string columns would fail if the database had a Kazakh collation.


1 Windows Presentation Foundation (WPF)

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 4.8 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