How to view the body returned by an http 500 from a System.Net.HttpWebRequest

The microsoft docs give a good run down of what HttpWebRequest.GetResponse returns if it fails, you can check it out here https://learn.microsoft.com/en-us/dotnet/api/system.net.httpwebrequest.getresponse?view=netframework-4.8

In your example I believe you need to check for WebException and handle it.

Stream responseStream = null; WebResponse _Response = null; Stream responseStream = null; HttpWebRequest _Request = null; try { _Response = _Request.GetResponse(); responseStream = _Response.GetResponseStream(); } catch (WebException w) { //here you can check the reason for the web exception WebResponse res = w.Response; using (Stream s = res.GetResponseStream()) { StreamReader r= new StreamReader(s); string exceptionMessage = r.ReadToEnd(); //here is your error info } } catch { //any other exception }