You can use this as a knowledge base article, a troubleshooting guide, or an internal documentation reference. Overview Microsoft SQL Server 2012 Native Client (often referred to as SQL Server Native Client 11.0 or SQLNCLI11 ) is a stand-alone data access application programming interface (API) used for both OLE DB and ODBC. It was introduced with SQL Server 2012 and serves as the successor to SQL Server 2008 Native Client (SQLNCLI10) and the legacy SQL Server Native Client (SQLNCLI).