WebRequest returns 401 Unauthorized

[Dave]

I'm trying to make a webrequest to another server on our webfarm (to synch
the cache as explained in http://www.eggheadcafe.com/articles/20030420.asp)
but I'm getting a 401 unauthorized error.

We are using service accounts for the app to run under which I thought would
work in setting the webrequest's credentials property but with no luck....

HttpWebRequest req = (System.Net.Htt pWebRequest)Web Request.Create( sFullUri);
req.Method = "POST";
Stream stm = req.GetRequestS tream();
stm.Write(dataT oSend,0,dataToS end.Length);
stm.Close();
System.Net.WebR esponse resp;

string ServiceAcct =
System.Configur ation.Configura tionSettings.Ap pSettings["ServiceAcc t"];
string ServiceAcctPwd =
System.Configur ation.Configura tionSettings.Ap pSettings["ServiceAcctPwd "];

NetworkCredenti al nc = new NetworkCredenti al(ServiceAcct, ServiceAcctPwd, "");
req.Credentials = nc;
resp = req.GetResponse (); <!--error below...

"The remote server returned an error: (401) Unauthorized. "

[Bruce Barker]

if your webservice is using ntlm, the service account needs to be a domain
account.

-- bruce (sqlwork.com)
"Dave" <Da**@discussio ns.microsoft.co m> wrote in message
news:A8******** *************** ***********@mic rosoft.com...

I'm trying to make a webrequest to another server on our webfarm (to synch
the cache as explained in
http://www.eggheadcafe.com/articles/20030420.asp)
but I'm getting a 401 unauthorized error.

We are using service accounts for the app to run under which I thought
would
work in setting the webrequest's credentials property but with no luck....

HttpWebRequest req =
(System.Net.Htt pWebRequest)Web Request.Create( sFullUri);
req.Method = "POST";
Stream stm = req.GetRequestS tream();
stm.Write(dataT oSend,0,dataToS end.Length);
stm.Close();
System.Net.WebR esponse resp;

string ServiceAcct =
System.Configur ation.Configura tionSettings.Ap pSettings["ServiceAcc t"];
string ServiceAcctPwd =
System.Configur ation.Configura tionSettings.Ap pSettings["ServiceAcctPwd "];

NetworkCredenti al nc = new NetworkCredenti al(ServiceAcct, ServiceAcctPwd,
"");
req.Credentials = nc;
resp = req.GetResponse (); <!--error below...

"The remote server returned an error: (401) Unauthorized. "