I have RB 14X installed on one machine and RB 15X on another. The credentials for a shared dataset show differently on one system than they do on the other. On the 14X system, they show as "Do not use credentials" even though the datasource is configured with "Use database credentials", and the query designer asks for a password the first time I access the database server from RB. Then I can edit queries. On the 15X machine, it shows as "Use current windows user. Kerberose..." and I get an error with the same user/password. Why the difference? It's the same report, same report server, same shared datasource.