SSIS connection manager can not connect to sql server using Native OLEDB Provider

Why would call from SSIS to connect to database server using OLEDB Provider (such as Microsoft SQL Server Native Client 11.0) fails to make a connection? I get error: Client Unable to establish connection. Hresult: 0x80004005. However I do not get error when same package makes a connection to same database using ".Net Provider\SqlClient Data Provider"