In this post, you’ll learn more about the Error FVE_E_PASSPHRASE_PROTECTOR_CHANGE_BY_STD_USER_DISALLOWED – 0x803100C1 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
FVE_E_PASSPHRASE_PROTECTOR_CHANGE_BY_STD_USER_DISALLOWED – 0x803100C1
Win32 COM Error Error Description
You must be logged on with an administrator account to change the password. Click the link to reset the password as an administrator.