Quick note: if your Clarion application does not work correctly from within the protected "Program Files (x86)" folder tree even with an embedded Win10 UAC manifest, run your application (just for fun) "elevated". Right-click the main .exe and select "Run as administrator". Then see if this works. If it does, it's an UAC issue. But this is just a test. According to the Windows Development Guidelines, the "mixed-mode" application has to work fine non-elevated and elevated.

Friedrich