Win Update KB5013889 Cumulative Update Preview .NET Framework 3.5 and 4.8 for Windows 11 - June 14

Brink · Jun 14, 2022

June 14, 2022 - KB5013889 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 11

The June 14, 2022 update for Windows 11 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.

Summary
Security improvements

There are no new security improvements in this release. This update is cumulative and contains all previously released security improvements.

Quality and reliability improvements

WPF1 - Addresses an issue where DWM failures can cause WPF's render thread to fail. An app can opt-in to the behavior of ignoring all DwmFlush errors by setting a regkey in HKCU\Software\Microsoft\Avalon.Graphics\IgnoreDwmFlushErrors or HKLM\Software\Microsoft\Avalon.Graphics\IgnoreDwmFlushErrors whose name is the full path to the .exe that wants to opt-in, and whose DWORD value is 1.
- Addresses an issue of WPF apps not working with "Text Cursor Indicator" enabled when using RichTextBox.
Winforms - Improved the hardened rendering of ComboBox controls on 64 bit architectures.
- Improved the reliability of data-bound ComboBox controls under assistive technology.
.NET Runtime - Addresses several issues that would cause too many garbage collections under high memory load. The part of the change that reduces the number of blocking generation 2 collections under high memory load is considered a tuning change and is only active if the GCConserveMemory setting is set to a non-zero value. The part of the change that reduces needless generation 0 collections is considered an improvement and is always active.
- Adjusted GC Heap Hard Limit configuration, as well as processor interpretation for .NET Framework container scenarios.
Workflow - Addresses an issue when users interact with the Workflow Designer they might encounter incorrectly disabled context menu items when right clicking on a variable in the component variables list.

1Windows Presentation Foundation (WPF)

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 To download and install this update, go to Settings > Update & Security > Windows Update, and then select Check for updates.
Windows Update for Business No None. These changes will be included in the next security update to this channel. For more information about Windows Update for Business go to the Windows Update for Business website.
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 update will automatically sync with WSUS if you configure Products and Classifications as follows:
Product: Windows 11
Classification: Updates

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.