i am trying to read a local cube got error {"A connection cannot be made. Ensure that the server is running."}

    Microsoft.AnalysisServices.AdomdClient.AdomdConnection _conn;
            _conn = new Microsoft.AnalysisServices.AdomdClient.AdomdConnection();

            _conn.ConnectionString = @"Provider=MSOLAP.5;Persist Security Info=True;Initial Catalog=Analytic;Data Source=d:\Analytic.cub;MDX Compatibility=1;Safety Options=2;MDX Missing Member Mode=Error";

            _conn.Open();
            string s = _conn.State.ToString();

I got error-{"A connection cannot be made. Ensure that the server is running."}

please help me on this