In this post, you’ll learn more about the Error FVE_E_POLICY_STARTUP_PIN_KEY_NOT_ALLOWED – 0x80310064 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
FVE_E_POLICY_STARTUP_PIN_KEY_NOT_ALLOWED – 0x80310064
Win32 COM Error Error Description
Group policy settings do not permit the use of a startup key and PIN. Please choose a different BitLocker startup option.