An error has occurred during report processing. (rsProcessingAborted) Cannot create a connection to data source 'DataSource'.
(rsErrorOpeningConnection) A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) SQL Server Reporting Services
Issues with SQL.
On the SQL Server, open a web browser and go to HTTP://localhost/reports
if this fails. the problem is with SQL. Please contact Microsoft for assistance with troubleshooting and configuring Microsoft SQL Server Reporting.