FAQ 024: I’m unable to successfully test my connection to a SQL Server database (or a SQL-based Historian) – get the error “Data Source name not found and no default driver specified.”

SQL Native Client 11 is not installed on the Dream Report machine.  Install it from the Dream Report \Utilities folder.  For more details, see tech note https://dreamreport.atlassian.net/wiki/spaces/DreamReport/pages/19202049