Hi guys.. I have installed MSDE (vs.net package) in my machine and although i connect to the databases through the server explorer in VS.NET,  i cannot connect to the same databases through ASP.NET due to authentication errors. It doesn't work in both cases: using integrated authentication (Login as ASPNET), providing the user manually through connection string (uid=sa;password=;) I haven't done any changes on the msde configuration after install. I use winXP pro. Any ideas Thanx in advance! ;)