Thank cluberti get back to me, I do have adssecurity.dll it working 32bit xp/vista but not for 64bit. I look your link same file I have. do you have any idea why working 32bit not 64bit. i rerun subinacl got these message can be my subinacl has wrong version. please help. Thanks, Z:\public\dsl\packageOE10\0.01_FR_EN>subinacl SubInAcl version 5.2.3790.1180 Invalid Argument ! Use : SubInacl /help to get the usage information or SubInAcl /help syntax to understand SubInAcl syntax.