Locally print method working but configure iis not working

//this is my code
const string acrobatPath = @"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe";

            string parameters = String.Format("/t /o {0} \"{1}\"", pdfFilepath, printerName);
            System.Diagnostics.ProcessStartInfo processStartInfo = new System.Diagnostics.ProcessStartInfo(acrobatPath, parameters);

            System.Diagnostics.Process process = System.Diagnostics.Process.Start(processStartInfo);
            System.Threading.Thread.Sleep(10000);
            process.WaitForInputIdle(15 * 1000);
            process.Kill();