I am working with a proxy that requires authentication, i.e., in a browser if I try to open a page it will immediately ask for credentials. I supplied same credentials in my program but it fails wi...

I'm getting this error when I call a web service: "The remote server returned an error: (407) Proxy Authentication Required". I get the general idea and I can get the code to work by adding myPr...

I use this code with .NET 3.5 and receive error "The remote server returned an error: (407) Proxy Authentication Required." using (WebClient client = new WebClient()) { WebRequest.DefaultWebProxy...

I have tried everything but I cant seem to fix this issue that is happening for only one client behind a corporate proxy/firewall. Our Silverlight application connects to Amazon S3 for downloading/...

I've created simple WinForms app that uses free webservice http://www.webservicemart.com/uszip.asmx. But this app fails to use service operation with error: The remote server returned an unexpec...

I'm trying to get Fiddler to work with my company's proxy. Every external request is returning 407. So far I've tried adding oSession.oRequest["Proxy-Authorization"] = "YOURCREDENTIALS"; to the c...

When I run the following Powershell cmdlet (from the Azure Management Tools Snapin): get-osversions -subscriptionId **** -certificate (get-item cert:\CurrentUser\MY\******) I get the following e...

Update: If you've just arrived at this question, the general gist is that I'm trying to make a HttpWebRequest via a proxy, and I'm getting a 407 from our strange proxy server. IE,Firefox,Chrome all...