Hi All, I just upgraded from 2.0.7 to 2.2.3 because I need to have the PDC functionality. I have followed all the FAQ and HowTo's but when I try and join the domain from an Win2000 box I get the following error: "A null reference pointer was passed to the stub" This is after the login. I may not have set the domain admins correctly but I think I did. Could this error be because of that? Thanks Glenn