I'm trying to run a Crystal Report using Crystal Runtime but I'm getting a "Logon Failed. Details: [Database Vendor Code: 18456]" After running a SQL Trace, I think I have found why. It appears as though it depends on how the user is logged on to the network as to whether or not they are able to run the reports. Instead of logging on under SQL server, it seems to be defaulting to the network logon instead. How can I make this default to SQL Server?