I created a Windows appliction using CR 2008 basic (VS2008). It connects to an SQL server 2008 computer using SQL server authentication. The application works fine in Vista and Windows Server 2008; it connects to the SQL server, generates the report and shows it fine. All this without asking me about username and password to logon to the database (as i provide the username and password in the code). However, when i use the application in Windows Server 2003 or Win XP, it gives a logon failed error and shows a prompt for entering username and passord to logon to the database. Even when i enter the correct password, it keeps giving logon error. I'd appreciate any help. Thanks.