Problem with service written in C#

This issue is that running the code in the foreground works but once run it the background it gets a 500 error, we need someone to resolve this error. Window console Application for Fetching Camera details in Milestone management server 1. Calling a web service (http://localhost/ServerAPI/[login to view URL]) for getting XML file at run time data. The SOAP method GetConfiguration provides more info per camera, and information about other device types. 2. Web service return XML file which contain Camera IP and respective Metadata. 3. Required IP and Metadata is getting by parsing the XML Typical operations on this SOAP service are: 1. Logon via Active Directory and retrieve an XProtect token for e.g. the ImageServer Protocol 2. Retrieve configuration (if on a XProtect Corporate system) 3. Trigger user-defined events with or without metadata (e.g. camera guids) 4. Create and query bookmarks related to a camera Running console Application as background service: 1. Calling a web service (http://localhost/ServerAPI/[login to view URL]) for getting XML file at run time data. Throws Exception: The remote server returned an error: (500) Internal Server Error. at [login to view URL]() In milestone asp.net web app that dynamically generates an XML file and sends it to a [login to view URL] web service Things were great in calling console application and Scheduled it in Task scheduler. But when set to Service (background task) it throws this error --> The remote server returned an error: (500) Internal Server Error. at [login to view URL]() public void Cam() { [login to view URL](@"C:\temp\[login to view URL]", [login to view URL]("Started on {0} {1}", [login to view URL] + " " + [login to view URL], [login to view URL])); String xmlStr = readXmlFile("http://localhost/ServerAPI/[login to view URL]"); } private String readXmlFile(String urlStr) { [login to view URL](@"C:\temp\[login to view URL]", [login to view URL]("Started on {0} {1}", [login to view URL] + " " + [login to view URL], [login to view URL])); try { HttpWebRequest request = (HttpWebRequest)[login to view URL](urlStr); [login to view URL] = [login to view URL]; HttpWebResponse response = (HttpWebResponse)[login to view URL](); Stream iDataStream = [login to view URL](); StreamReader reader = new StreamReader(iDataStream); string xmlStr = [login to view URL](); [login to view URL](); [login to view URL](); [login to view URL](); return xmlStr; } catch (Exception e) { [login to view URL](@"C:\temp\[login to view URL]", [login to view URL]("Started on {0} {1}", [login to view URL] + " " + DateTime.Now.Millisecond+ " "+e.Message+ " HResult" + [login to view URL] + " [login to view URL] "+ [login to view URL], [login to view URL])); return ""; }