In this post, you’ll learn more about the Error FVE_E_INVALID_PIN_CHARS_DETAILED – 0x803100CC that is returned when working with the COM-based APIs in Win32
Win32 COM Error
FVE_E_INVALID_PIN_CHARS_DETAILED – 0x803100CC
Win32 COM Error Error Description
Your PIN can only contain numbers from 0 to 9.