Quartz.net windows service does not execute job which referencesSSRS web service - reporting-services

Question

I have used two web references of ssrs reporting execution service to generate the report. I am using quartz.net windows service for scheduling ssrs reports. My Windows service is working when I use the StdSchedulerFactory.GetDefaultScheduler() but as I execute my job in a Quartz service remotely and use GetScheduler() , it's not working.
public void Execute(IJobExecutionContext context)
{
RS2005.ReportingService2005 rs;
RE2005.ReportExecutionService rsExec;
// Create a new proxy to the web service
rs = new RS2005.ReportingService2005();
rsExec = new RE2005.ReportExecutionService();
// Authenticate to the Web service using Windows credentials
rs.Credentials = System.Net.CredentialCache.DefaultCredentials;
rsExec.Credentials = System.Net.CredentialCache.DefaultCredentials;
rs.Url = "http://127.0.0.1:7001/ReportServer/reportservice2005.asmx";
rsExec.Url = "http://127.0.0.1:7001/ReportServer/reportexecution2005.asmx";
string historyID = null;
string deviceInfo = null;
string format = "PDF";
Byte[] results;
string encoding = String.Empty;
string mimeType = String.Empty;
string extension = String.Empty;
RE2005.Warning[] warnings = null;
string[] streamIDs = null;
// Path of the Report - XLS, PDF etc.
string fileName = "samplereport.pdf";
// Name of the report - Please note this is not the RDL file.
string _reportName = #"/reports_Debug/reportname";
string _historyID = null;
bool _forRendering = false;
RS2005.ParameterValue[] _values = null;
RS2005.DataSourceCredentials[] _credentials = null;
RS2005.ReportParameter[] _parameters = null;
try
{
_parameters = rs.GetReportParameters(_reportName, _historyID, _forRendering, _values, _credentials);
RE2005.ExecutionInfo ei = rsExec.LoadReport(_reportName, historyID);
RE2005.ParameterValue[] parameters = new RE2005.ParameterValue[8];
if (_parameters.Length > 0)
{
parameters[0] = new RE2005.ParameterValue();
parameters[0].Name = "FromDate";
parameters[0].Value = "1/1/2016";
parameters[1] = new RE2005.ParameterValue();
parameters[1].Name = "ToDate";
parameters[1].Value = "1/21/2016"; // June
}
rsExec.SetExecutionParameters(parameters, "en-us");
results = rsExec.Render(format, deviceInfo,
out extension, out encoding,
out mimeType, out warnings, out streamIDs);
using (FileStream stream = File.OpenWrite(fileName))
{
stream.Write(results, 0, results.Length);
}
}
catch (Exception ex)
{
throw ex;
}
}