SSIS Job which downloads files from websites using script task failing after few runs.

I have a weird issue when downloading some zip files from websites.

My solution is working fine when I run from Visual Studio manually.

When I deployed on to the server, it did not run.

Below is the error I am getting.



I RDP'ed on to the Server on which the jobs are scheduled and opened the browser, typed one ( any one out of many job ursl) URL Manually. After this was done, my Jobs( on SQL Server Agent )started running successfully.

But It ran successfully for few runs( I scheduled my job to run every 15 mins) and then stopped again with the same error message.



FYI... I am using a Proxy Account to run my Jobs on SQL Server Agent.

Below is the code I am using in Script Task to download my files.


        public void Main()

        {

            try

            {

                // TODO: Add your code here

                bool fireAgain = true;

                Dts.Events.FireInformation(0, "Download File", "Start downloading " + Dts.Variables["ServerURL"].Value.ToString(), string.Empty, 0, ref fireAgain);



                // Create a webclient to download a file

                WebClient mySSISWebClient = new WebClient();

                mySSISWebClient.Credentials = new System.Net.NetworkCredential(Dts.Variables["ServerUserName"].Value.ToString(), Dts.Variables["ServerPassword"].Value.ToString());

                mySSISWebClient.DownloadFile(Dts.Variables["ServerURL"].Value.ToString(), Dts.Connections["myProductFile"].ConnectionString);



                // Logging end of download

                Dts.Events.FireInformation(0, "Download File", "Finished downloading " + Dts.Connections["myProductFile"].ConnectionString, string.Empty, 0, ref fireAgain);



                // Quit Script Task succesful

                Dts.TaskResult = (int)ScriptResults.Success;

                //Dts.TaskResult = (int)ScriptResults.Success;

            }



            catch (Exception Ex)

            {

                Dts.Events.FireError(0, "ERROR", Ex.Message, null, 0);

                Dts.TaskResult = (int)ScriptResults.Failure;

            }

        }