In this post, you’ll learn more about the Error FVE_E_DV_NOT_SUPPORTED_ON_FS – 0x80310070 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
FVE_E_DV_NOT_SUPPORTED_ON_FS – 0x80310070
Win32 COM Error Error Description
The selected discovery drive type is incompatible with the file system on the drive. BitLocker To Go discovery drives must be created on FAT formatted drives.