Windows 10: Unable to launch WPF application, crashes with AccessViolationException when accessing...

Hi,recently we seeing our application is crashing because of the AccessViolationException when accessing the font collection. This is happening in very few VMs upgraded to Win10 21H2. Event viewer has below callstack. We tried rollback the windows update, but no use. still issue is there. Any help would highly appreciated . Thanks, Framework Version: v4.0.30319Description: The process was terminated due to an unhandled exception.Exception Info: System.AccessViolationException at MS.Internal.FontCache.FontSourceCollection.System.Collections.Generic.IEnumerable<MS.Internal.Text.Te

:)

 

Enable visual styles in WPF application

EUREKA!

Steps:
1) I made a Windows form (HostWPF namespace, Form1 is the form).
2) I added a reference => System.Windows.Forms.Integration which contains classes that enable interoperation between the Windows Forms and WPF technologies. When you use System.Windows.Forms.Integration classes, you can host Windows Forms controls on WPF pages, and WPF elements in Windows Forms-based applications.
3) Then added a control (damn Vi$ual $tudio 2010 does not allow to add a WPF window) but after adding I edited the XMAL code in the way I want *Wink
4) The next steps are simple. Download the first attachment. But => see the photo.
It crashes!!!!!
5) Finally???
We must use System.Windows.Forms.Application.Exit(); command because the WPF window behaves like a classical Windows Form.
Download the second attachment. Note that the Windows form's name is Initial.
Enjoy!

 

Unable to launch applications in RDP session

Issue: User is unable to launch applications when connected to a device through RDP

To clarify:

RDP connection itself is successful. User is can access device. But when user clicks an application, it does not launch.

User IS able to launch applications when signed into destination device directly.

Other users are not encountering issues opening applications when connected via RDP on the same devices.

Issue seems to occur only on this users specific profile.

Any suggestions?

 

Terminate WPF/Windows forms applications....

WPF has no concept of MDI applications. In fact Microsoft is trying to discourage any one using that form of application. I'm new to WPF and I really like MDI applications. It allows me to move quickly between windows and compare the content of different windows. Furthermore, sometime the content of one window is useful for another so I can copy and paste. I think it's a great user experience for working mode.
To continue, download the attachment!
It includes two folders, they are very simple code.
The point is how you can terminate an application (Windows Form and WPF).