kb5011048 win update & c# WPF application

Question

kb5011048 win update & c# WPF application

Karin Biton 0

Hello everyone

I wrote a WPF c# application using .NET framework 4.6.1
After Windows update kb5011048, the application does not open. (double click with no response)
It happens in every pc that was updated recently.

When removing the specific update, the app returned to work.

Any Idea what can cause this issue or how to fix my app to make it work?

Many thanks!

Viorel 121.3K Reputation points

2023-08-10T18:53:01.1733333+00:00

Does it hang or close?

Is it possible to run and debug it in Visual Studio?

1 answer

Your answer

Viorel 121.3K Reputation points

2023-08-10T18:53:01.1733333+00:00

Does it hang or close?

Is it possible to run and debug it in Visual Studio?

Answer 1

Hui Liu-MSFT 48,651 Microsoft External Staff

Hi,@Karin Biton . Welcome Microsoft Q&A.

Here are some steps you could take to troubleshoot and potentially fix the issue:

Check Event Viewer: Look in the Windows Event Viewer for any application-related error messages or crash reports. This might provide insights into what's causing the application to fail.

Check Compatibility: Make sure that your WPF application is compatible with the version of the .NET Framework you're using (4.6.1 in this case) and any other dependencies it relies on.

Debugging: If possible, attach a debugger to your application to see where it's failing or hanging. This might provide more information about the cause of the issue.

Rollback Windows Update: Since removing the specific update (kb5011048) allows your application to work, you might consider delaying that update or looking for further information from Microsoft about any known issues with that update.

Update .NET Framework: Check if there are any updates or patches for the .NET Framework version (4.6.1) you're using. Applying the latest updates might resolve compatibility issues.

Check for Third-Party Libraries: If your application relies on third-party libraries or components, ensure that they are also compatible with the Windows update and .NET Framework version.

Check Graphics Drivers: In some cases, graphics driver updates can cause compatibility issues with WPF applications. Ensure that your graphics drivers are up to date.

Check Application Logs: If your application logs its own events or errors, check those logs to see if they provide any clues about the issue.

Karin Biton 0 Reputation points

2023-08-14T21:19:27.3+00:00

Hey @Hui Liu-MSFT ! Thank you very much for your detailed answer. I appreciate it.

I have some interesting updates:

Further to your recommendation to check the Windows event viewer. I found that there is a failure of a module called KERNELBASE.DLL.

Following this, I found an old thread that talks about the subject:

From the link: https://answers.microsoft.com/en-us/windows/forum/all/applications-fail-to-start-with-kernelbasedll/44a4c2ad-a43f-479b-b026-bcdc2ff01285

In short: it can be understood from the thread that the last upgrade (kb5011048) made changes to the file kernelbase.dll which is responsible for opening EXE files

An important figure (and half a solution for me) - when I compile the program with the .net 4.8.1 version, the software works on computers that have been updated.

To my surprise - I tried to compile the software again, but now with the old .net 4.6.1 version and the software also worked on the computers where the upgrade was installed!!!

The question arises, do the old versions of .net framework undergo changes and improvements over time? if yes, that makes sense, and this is our answer.

The version that doesn't work was released 3 years ago! and stopped working after the aforementioned upgrade.

Since my program is installed on dozens of end users, I would like to find the problem and solve it without sending them an updated program.

I would like to understand what can be done in order to still run the old program compiled in version 4.6.1 (before 3 years) on computers that have been upgraded or to know how to prevent the problem in my new version that will be released soon without canceling Windows updates that may interfere again in the future.

Thank you so much for your help.
Hui Liu-MSFT 48,651 Reputation points Microsoft External Staff

2023-08-15T08:09:08.6866667+00:00

Hi,@Karin Biton . Yes, older versions of the .NET Framework do undergo changes and improvements over time. The .NET Framework is a software framework developed by Microsoft that provides a large class library and runtime environment for building and running applications on Windows platforms. As Microsoft releases updates and service packs, they often include bug fixes, performance improvements, security enhancements, and sometimes even new features.

I will convert that comment to answer. If it helps, you could accept as answer, it will help other community members that have similar issues.

Share via

kb5011048 win update & c# WPF application

1 answer

Your answer