I uninstalled everything and started over.
Visual Studio: vs_Community.exe, at the beginning of installation there are many optional workloads, I choose only "Desktop development with C++", correct? And the english pack because the default is italian. Only these?
Arduino IDE: arduino-1.8.13-windows.exe, downloaded from
https://www.arduino.cc/en/software, link DOWNLOAD OPTIONS: Windows Win 7 and newer
I open Visual Studio - Extensions - Manage Extensions - Online - Arduino IDE for Visual Studio (Visual Micro) - Download - and proceed with installation.
Now the Visual Studio System Info is attached here.
I'm sorry, I hadn't seen the note "NOTE - The the Windows Store App Arduino application is NOT supported." and didn't imagine there were different versions of Arduino IDE and from the official Arduino page I had unintentionally arrived in the Windows Store.
Hope now is ready and ok.
Now to complete the installation I need to have Atmel-ICE working.
Thank you
Livio