Nope, it wasn't solved in UWP days, neither it's solved today.

To satisfy my interest, I've tried creating WinUI app (aka UWP/WinRT) in Visual Studio 2026. And this is what I've got on the first app launch after compilation:

"This device needs to be set up correctly to develop this type of app for Windows. If you don't, then you can't install and test your app before you submit it to Windows Store"

I don't want to install/submit, I just want to be able to run my fricking .exe.

Why you call this issue solved? It's still right there - the same voodoo dances and delusional expectations of subordination to Windows Store.