I suspect it's an app execution alias. These are used in Windows 10 and 11. For example, on Win 11, shell-executing "python" will launch the windows store on a default install. These can be turned off in Apps & Features on the target machine. Did you try shell executing the full path to the executable (rather than just the filename)?

Gee

I would recommend Aspose.Pdf from first-hand experience. Their support forums are very useful and Aspose normally respond pretty quickly.

Gee