I am having a data source problem on a report builder 3.0 report that I am setting up. I am using a custom data source that is not shared with any other applications. For the connections to work, I can get the 'credentials stored securely in the report server' to work. However I would prefer for the 'windows entegrated security' option to work. Note: This option only started to work once I changed the owner of the database from myself to a 'sql login' that I just created. The sql login that I just created is in the security section only for the database instance. This sql login is not in the security are for the new database that I just created called 'testdb'. Thus can you tell me what I need to do make the 'windows integrated security to work?