How do I get .NET to run properly?

Hi @Mason Tandy ,

Thanks for reaching out.

If your .NET application opens briefly and then closes, this usually means the program is exiting or crashing right at startup.

First, check what type of app it is. If it’s a console application, this behavior can be normal because console apps run their task and close immediately. In that case, try running it from Command Prompt so you can see any messages before it exits.

If it’s a window-based (GUI) application, it should remain open. When it closes instantly, it often means there’s an error happening during startup. Common causes include a missing .NET runtime, missing dependent files (DLLs), an architecture mismatch (x86 vs x64), or an unhandled exception in the application’s entry point.

I’d recommend running the app through Visual Studio in Debug mode, or launching it from Command Prompt to see if any error messages appear.

Hope this helps! If my answer was helpful - kindly follow the instructions here so others with the same problem can benefit as well.