KB5009467 .NET Framework 4.8 , 3.5 Windows 10 21H2, 21H1, 20H2

Patches in the form of Cumulative update preview for .Net Framework 3.5 and 4.8 have arrived at all versions of Windows and Windows server. Released on 25.01.2022 the update brings regular quality improvement including some remarkable bug fixes and changes. These updates will boost the reliability of the framework on Windows. We are here to discuss KB5009467 for Windows 10 21H2, 21H1, and 20H2.

It is suggested to apply this CU Preview rollout as part of your regular maintenance routines. The update does not bring any security improvements.

Table of Contents

.NET Framework 3.5 and 4.8 KB5009467 3.5, 4.8 for Windows 10 21H2, 21H1, 20H2

Here is the changelog –

Quality and reliability improvements

WPF₁

CU Preview KB5009467 addresses a hang when scrolling a list control where both the following conditions are true:
1. UseLayoutRounding is enabled.
2. The item margin is not a multiple of the rounding quantum. Noteworthy is the quantum is a function of the DPI scaling in effect.
The patch Addresses an exception Height must be non-negative that can take place when adding items or groups to the collection displayed by an ItemsControl.
25/01/2022 rollout addresses an issue where a shared ContextMenu stops displaying after it fails to display once because its owner was removed from the visual tree.

CLR₂

Addresses rare crashes and hangs that can appear in cases where a Garbage collection occurs while another thread is in the middle of certain special paths used to invoke shared-generic code from non-shared-generic contexts.

Note – WPF refers to Windows Presentation Foundation and CLR signifies Common Language Runtime (CLR).

How to download KB5009467 on Windows 10 21H2, 21H1, 20H2

Follow either of the underneath methods to install KB5009467 on Windows 10 20H2, 21H2, 21H1 –

Way-1: Using Windows auto-update

Press – Windows logo + X keys on the keyboard.
Select – Update & Security.
From the next page, click on – Check for updates.
After the downloading ends, you will get a prompt, click on – Restart now on that.

See – 4 Ways to Update Windows 10.

Way-2: From Windows update catalog

Go to the KB5009467 direct download link.
Find the appropriate file for your device and click on the Download button.
Navigate to the MSU file and double-click on it.
Click Yes if a verification pop-up prompts.

That’s all!!