In this post, you’ll learn more about the Error FVE_E_DE_FIXED_DATA_NOT_SUPPORTED – 0x803100C5 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
FVE_E_DE_FIXED_DATA_NOT_SUPPORTED – 0x803100C5
Win32 COM Error Error Description
This PC cannot support device encryption because unencrypted fixed data volumes are present.