Hi i am using a AD authentication and facing 2 problems. Authentication works fine when i move the application to a production server but FAILS in my LOCAL machine. Both local machine and server are in same domain and used same domain account logging in. When the machine logs in the users with domain account , AD authentication from the application says that the account is not valid. Please suggest me , if you can find out the problem and ways to recover. thanks in advance! Regards jesu