MathCAD Prime will not run anymore

[VP_11627379]

Hi! It's happening with both Prime 8 and 9 on Windows 11. In my case, I have no log file and no error on the Windows event viewer. I got the splash screen and nothing else. I tried all the solutions above and had no luck. Any ideas? Thanks! 

[VladimirN]

Have you tried the following?

• "Mathcad Prime does not launch after the initial splash on Windows OS": https://community.ptc.com/t5/PTC-Mathcad-Installation/Mathcad-Prime-does-not-launch-after-the-initia... 
• "Error "Mathcad application has stopped working" when launching Mathcad Prime x64-Bit version": https://community.ptc.com/t5/PTC-Mathcad-Installation/Error-quot-Mathcad-application-has-stopped-wor... 
• Article - "Mathcad Prime does not launch after the initial splash screen if Windows update KB4055002 for Microsoft .NET Framework 4.7.1 installed on the machine": https://www.ptc.com/en/support/article/cs277907

[VP_11627379]

Yes. I have tried all of that and no luck. I also gave done: 

- Reinstalled the Mathcad application

- Reinstalled .NET Framework 4.8.1

- There's no Mathcad log file 

- There's no error on the Windows Event Viewer 

I installed the Mathcad Prime 10 trial and it worked. The issue looks like be only on MC Prime 8/9.

Thanks, Vanderson