http://blogs.msdn.com/b/bclteam/archive/2005/03/16/396519.aspxA correct way to do this will be as follows: // Get DirectorySecurity from source directory DirectorySecurity dsSrc = Directory.GetAccessControl(srcPath, AccessControlSections.Access); // Transfer ACL security descriptor byte[] sdBinary = dsSrc.GetSecurityDescriptorBinaryFormen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/bclteam/archive/2005/03/16/396519.aspx#399835Mon, 21 Mar 2005 19:36:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:399835Ido SamuelsonTips <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=399835" width="1" height="1">http://blogs.msdn.com/b/bclteam/archive/2005/03/16/396519.aspx#398172Thu, 17 Mar 2005 22:16:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:398172David Boschmans' WeblogTips <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=398172" width="1" height="1">