Security :: WebClient Credential - How To Download Page From Local Site

At one point this was working, but somewhere something happened. What I am trying to do is simply download a page from our local site. I keep getting the 401 unauthorized.

I have tried NetworkCredential("user", "password", "domain")

and

CredentialCache cc = new CredentialCache();
cc.Add(new Uri("http://site/"), "Windows", new System.Net.NetworkCredential("user", "password", "domain"));

but that didnt work . We are using Windows authentication with no anonymous access.

Here is what was once working:

WebClient wc = new WebClient();
string FileName = Server.MapPath(\App_Data\rpt.htm);
wc.Credentials = CredentialCache.DefaultCredentials;
wc.DownloadFile("http://site/Report.aspx?OrderNum=7534&Type=inv&BE=1", FileName);