In this post, you’ll learn more about the Error FVE_E_RAW_BLOCKED – 0x80310051 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
FVE_E_RAW_BLOCKED – 0x80310051
Win32 COM Error Error Description
BitLocker Drive Encryption cannot enter raw access mode for this drive because the drive is currently in use.