System.IO.Exception with UWP FulltrustLauncher EXE

System.IO.FileLoadException 0x80131040 C# UWP happens when my .exe is launched using await FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync("Parameters")

This is weird because it works normal (NOT UWP), the FullTrustLauncher with DesktopBridge supposedly makes regular .exe's run in UWP but it appears not!

System.IO.FileLoadException 0x80131040 C# UWP happens when my .exe is launched using await FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync("Parameters")

FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync("Parameters")

Keep in mind, that UWP apps need certain permission to open files, and can still not open every location. Doing it will lead to a System.IO Exception, which could be your problem, if you load a config file or so at the beginning. More info here