c# - Cannot run a batch file from a Windows service in Windows server 2003 OS -

i using following code run batch file c#. following code part of windows service. code works fine in windows xp when deploy windows service windows server 2003 os returns exit code 1 (failure). know missing? need give special permission windows service? service installed local system service.

        processstartinfo psi = new processstartinfo();          //specify name , arguments pass command prompt         psi.filename = configurationmanager.appsettings["batchfilepath"];         psi.arguments = filename;           //create new process , set starting information         process p = new process();         p.startinfo = psi;          //set can tell when process has completed         p.enableraisingevents = true;          p.start();          //wait until process has completed         while (!p.hasexited)         {             system.threading.thread.sleep(1000);         }          //check see exit code         if (p.exitcode != 0)         {             logger.write("exit code" + p.exitcode);         } 

my next set try setting service run user you're logged in when works. way you'll know whether specific network service account that's stopping working