Windows 11 KB5019980 causes some apps to crash, Lets fix it

As part of the October patch update Microsoft released Windows 11 KB5019980 with different bug fixes and improvements, but the newest cumulative update causing another annoying issue. The latest KB5019980 (OS Build 22621.819) for windows 11 which includes many fixes, causes certain components of the .NET Framework 3.5 to fail.

.NET Framework is a software development framework for building and running applications on Windows.

Many application developers use the .NET Framework as their code base when building their products. Thus, the .NET Framework is required for certain applications to work. Unfortunately, the latest cumulative update breaks the mechanisms for integrating the .NET Framework into the operating system, causing applications to crash. The issue occurs on Windows 11, version 22H2 systems with the update KB5019980 installed, and Windows 10 users also report similar issues after installing cumulative update KB5018410.

Note: If Windows 11 KB5019980 fails to install or is stuck download hours, apply the solutions listed here.

The Feedback Hub app has amassed quite a few reports describing some .NET 3.5 Framework applications crashing.

We encountered a crash when launching a SQL application (client and server on the same system) on Windows 11. The application worked without problems on Windows 7 and on Windows 10. After installing the KB5019980 update for Windows, the application no longer starts, but uninstalling the update solves the problem.

Fortunately, not all applications based on the .NET 3.5 Framework are affected by this crash. But still, Microsoft confirmed this issue and as a workaround

Microsoft recommends Re-enabling .NET Framework 3.5 following the steps below.

Re-enabling .NET Framework 3.5

Here is how is to re-enable the .NET Framework 3.5 and Windows Communication Foundation on the Windows Features Settings page.

You can also run the following commands to perform this action via the terminal: To do so Press Windows key + S, type cmd and right click on the command prompt then select run as administrator. Now perform the following commands.

  • dism /online /enable-feature /featurename:netfx3 /all
  • dism /online /enable-feature /featurename:WCF-HTTP-Activation
  • dism /online /enable-feature /featurename:WCF-NonHTTP-Activation

If the problem not resolved, Microsoft recommends uninstalling the latest windows update If you are experiencing application crashes, it is recommended that you uninstall the update and evaluate the effect of this change.

Uninstall the windows 11 update

Here are steps to uninstall windows updates on windows 11 or 10 computers or laptops.

  • Open the settings app using the windows key + I
  • Go to Windows Update then Update history.
  • Under Related options, click Uninstall updates.
  • In the window that opens, find the KB5019980 update and click Uninstall.
  • To complete the uninstallation, you need to restart your PC.

uninstall windows 11 updates

Also, you can uninstall windows updates using the command prompt. To do so, open the command prompt with administrator rights: open the start menu, type cmd, right-click on the result and select “Run as administrator”. To remove the update, run the command:

wusa /uninstall /kb:KB5019980

To complete the uninstallation, you need to restart your PC.

Once the system starts, go to Settings > Windows Update and under Other options, click Suspend for 1 week.

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