In this post, you’ll learn more about the Error FVE_E_CANT_LOCK_AUTOUNLOCK_ENABLED_VOLUME – 0x80310097 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
FVE_E_CANT_LOCK_AUTOUNLOCK_ENABLED_VOLUME – 0x80310097
Win32 COM Error Error Description
The drive cannot be locked because it is automatically unlocked on this computer. Remove the automatic unlock protector to lock this drive.