In this post, you’ll learn more about the Error FVE_E_POLICY_USER_DISABLE_RDV_NOT_ALLOWED – 0x80310079 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
FVE_E_POLICY_USER_DISABLE_RDV_NOT_ALLOWED – 0x80310079
Win32 COM Error Error Description
Group Policy settings do not permit turning off BitLocker Drive Encryption on removable data drives. Please contact your system administrator if you need to turn off BitLocker.