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) Named Pipes Provider: Could not open a connection to SQL Server [53]. OLE DB provider "MSOLEDBSQL" for linked server "eregulations-consistency" returned message "Invalid connection string attribute". Named Pipes Provider: Could not open a connection to SQL Server [53]. OLE DB provider "MSOLEDBSQL" for linked server "eregulations-consistency" returned message "Invalid connection string attribute".