Getting Error:Failed to open the connection while calling crystal report

Question

I am getting the below error while calling the crystal report from dot net app. I am using OLEDB to connect to database. It is working perfectly in our DEV environment but as soon as I move it to production information after changing the logon information in the report it start giving the below error.
Failed to open the connection.C:\WINDOWS\TEMP{C2FD97D9-2ADE-41BB-88FF-23A4DF20BC6F}.rpt
Details: [Database Vendor Code: 17 ]

Answer 1

Are you able to connect to the database from the production machine using a UDL file?
If you haven't tried this, here's how to do it. Take these steps on the machine that is hosting the application. Create a new text file on the desktop. Change the file extension to ".udl" (without the quotes). Double-click on this to bring up the OLEDB connection test: start on the Provider tab and select the appropriate provider. Click "Next" and on the following tab enter your connection information. Click the "Test Connection" button to test the connection. Does it connect  to the database successfully?
If you click on "OK" to close the dialog and then open the UDL file with Notepad, you should see an OLEDB connection string. In this string should be the same property values for server, database, user id and password which you are providing through your application. If they are not the same, modify your application to use these values.
If testing your connection information with the UDL file works but your application is still failing when using the same credentials, try profiling or tracing the database. Do you see connection attempts from the application? Are there any errors?
If you're impersonating, have you set up windows authentication correctly for both the application and the database?