In this post, you’ll learn more about the Error FVE_E_KEY_PROTECTOR_NOT_SUPPORTED – 0x80310069 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
FVE_E_KEY_PROTECTOR_NOT_SUPPORTED – 0x80310069
Win32 COM Error Error Description
The key protector is not supported by the version of BitLocker Drive Encryption currently on the drive. Upgrade the drive to add the key protector.