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  The remote server returned an error: (407) Proxy Authentication Required.


This is a very common error message when you try to get a resource on internet through your application. Why you getting this error from your application not from explorer. The reason is very simple either you use LAN that requires proxy setting or you use proxy server.

Example : 
DataSet myds = new DataSet();
//Set the system proxy with valid server address or IP and port.
System.Net.WebProxy pry = new System.Net.WebProxy("172.16.0.1",8080);
//The DefaultCredentials automically get username and password.
pry.Credentials = CredentialCache.DefaultCredentials;
GlobalProxySelection.Select = pry;
myds.ReadXml("http://msdn.microsoft.com/netframework/rss.xml", XmlReadMode.Auto);
myds.WriteXmlSchema(@"c:\\f.xml");
this.GridView1.DataSource = myds.Tables[2];
this.GridView1.DataBind();
Posted on Saturday, August 11, 2007 2:30 AM Exceptions , .Net , Microsoft Servers | Back to top


Comments on this post: (407) Proxy Authentication Required.

# re: (407) Proxy Authentication Required.
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Hiii thnks for the code it help me a lot.
Thnks very much
Left by Sachin Vibhute on Aug 12, 2007 9:10 PM

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I know this is a very common issue. I keep finding way too many software that claim to interact with Web 2.0 sites or services, and connect here or there.... still forgetting one basic simple rule, that is: letting people use a proxy.

Most programmers for some reasons just assume that since they are directly connected to the internet, everybody is. Which isn't always the case. Most companies have proxies and will only let you out to port 80 - by using their proxy.

...which in turn is one of the reasons why most applications now "talk" and tunnel whatever application protocol on top of HTTP... still a lot of softwares simply "forget" or don't care proving a simple checkbox "use proxy", which will translate in two or three extra lines of code...
Left by Daniele Muscetta on Aug 12, 2007 11:22 PM

# re: (407) Proxy Authentication Required.
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Thnks
It helped a lot........
Laxmi Kant
Left by Laxmi Kant on Aug 16, 2007 4:30 PM

# re: (407) Proxy Authentication Required.
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yeh this sorted me out too i wasnt giving the proxy the default credentials nice one man
Left by jon on Oct 04, 2007 11:29 PM

# re: (407) Proxy Authentication Required.
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Thnanks.. this really helped me to resolve the proxy issue
Left by a on Oct 09, 2007 2:20 AM

# re: (407) Proxy Authentication Required.
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I have a similar problem. I'm using a webcontrol in my desktop application to that talk to a java application and displays an html page. But when i do a GetResponse after passing in the parameters for proxy authentication it throws an error saying (407) Proxy Authentication Required - user not authorized.
Here is the code snipet
WebRequest webReq = WebRequest.Create(http://url i need to connect");
webReq.Proxy = new WebProxy("http://proxy:8080",true);
Proxy.Credentials = new NetworkCredential(UserNamePassword,"Domain");
webReq.Proxy = Proxy;
System.Net.WebResponse resp = webReq.GetResponse();

Please let me know what is that I'm doing incorrectly? I'm stuck with this.
Left by Harsha Kumar on Nov 21, 2007 2:27 AM

# re: (407) Proxy Authentication Required.
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How do i fix this on my lap top so i use vonage
Left by kathy on Nov 27, 2007 9:03 AM

# re: (407) Proxy Authentication Required.
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Thanks a lot!
Left by Márcio on Mar 11, 2008 7:05 AM

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thank you man
Left by dj, dj programı, dj programları on Mar 11, 2008 7:20 PM

# re: (407) Proxy Authentication Required.
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I know this is a very common issue. I keep finding way too many software that claim to interact with Web 2.0 sites or services, and connect here or there.... still forgetting one basic simple rule, that is: letting people use a proxy.
Left by gocompare on Mar 12, 2008 11:59 PM

# re: (407) Proxy Authentication Required.
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Excellent post.
Left by Hasan on Mar 25, 2008 9:29 AM

# re: (407) Proxy Authentication Required.
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heyy im facing the same problem with my softphone as im implementing a softphone that connects to a sip server to communicate with other clients..it works fine with voice calls but once i try to send any text messages the same error occurs to me..so would i use the same code to solve the problem or its different in my issue??

thanx in advance
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# re: (407) Proxy Authentication Required.
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# re: (407) Proxy Authentication Required.
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how i fixed this problem.
Left by jon reyes on Jun 22, 2008 6:09 AM

# re: (407) Proxy Authentication Required.
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hi i am getting the error" unable to connect to remote server"

on the statement

ds.ReadXml("http://msdn.microsoft.com/netframework/rss.xml", XmlReadMode.Auto);

i am working in an organisation and let me know how to use the proxy settings..
Left by NB on Jul 30, 2008 7:50 PM

# re: (407) Proxy Authentication Required.
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THANKS!
Obrigado!
Left by fino on Aug 08, 2008 5:49 AM

# re: (407) Proxy Authentication Required.
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Hi,

i am having same error : The remote server returned an error: (407) Proxy Authentication Required

and i am using below code.

xmlRequest = XmlUtil.ToXml(this, false);

proxy = new projectnamespace.webservice();

proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
xmlResponse = proxy.ExecuteRequestGetXml((int) ObjectName, xmlRequest);

can you please tell me what is missing into this code or please suggest me how can i merge your code into ?

thanks in advance.. please help me!!!!
Left by suresh h on Sep 12, 2008 6:22 AM

# re: (407) Proxy Authentication Required.
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what code should I use I am new with the computer stuff and eveytime I try to use my vonage it gives me a 407 proxy required error...what should I do???
Left by ladyenny on Sep 22, 2008 1:11 AM

# re: (407) Proxy Authentication Required.
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# re: (407) Proxy Authentication Required.
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Left by diyet on Oct 14, 2008 9:39 PM

# re: (407) Proxy Authentication Required.
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i am having error : The remote server returned an error: (407) Proxy Authentication Required

and i am using below code.

xmlRequest = XmlUtil.ToXml(this, false);

proxy = new projectnamespace.webservice();

proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
xmlResponse = proxy.ExecuteRequestGetXml((int) ObjectName, xmlRequest);


wer do i need to put all this code ? i mean wer do i hav to place this code to get the functioning again?
Left by tanu on Oct 17, 2008 4:37 PM

# re: (407) Proxy Authentication Required.
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Left by Hikaye on Oct 19, 2008 12:08 AM

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Left by diziizle on Oct 19, 2008 12:08 AM

# re: (407) Proxy Authentication Required.
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Hi All,
Fine with all your codes. I am software Implementator and i desktop based tool which download the bulk images from our server via. Internet.

Now its shooting an error "http error proxy authentication required", Pls suggest some setting which can be done from the client network in their proxy server to resolve the issue.

Thanks,
jitendra
Left by Jitendra on Oct 31, 2008 12:22 AM

# re: (407) Proxy Authentication Required.
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# re: (407) Proxy Authentication Required.
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How do i fix this on my lap top so i use vonage; its really urgent. let me know the details; that how to place these codes
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# re: (407) Proxy Authentication Required.
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# re: (407) Proxy Authentication Required.
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# re: (407) Proxy Authentication Required.
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# re: (407) Proxy Authentication Required.
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Left by Ravi on Jun 25, 2009 11:31 AM

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Hi all,

I think it works fine in XP but not in Vista. I have the same Problem.. I get a "407 Proxy Authentication Required" in Vista, in XP it works:

HttpWebRequest httpWebRequest = ((HttpWebRequest)WebRequest.Create(url));
httpWebRequest.Method = "POST";
httpWebRequest.ContentType = "application/x-www-form-urlencoded";
httpWebRequest.ContentLength = ((long)byteArray.Length);
httpWebRequest.Proxy = HttpWebRequest.GetSystemWebProxy();
httpWebRequest.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
Stream answerStream = httpWebRequest.GetRequestStream();


Idea??? Some one can help me?

Thanks!
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# re: (407) Proxy Authentication Required.
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Left by Farzad on Aug 04, 2009 4:39 AM

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where do you insert those codes, my pc is on a LAN network server and utorrent pops out those errors, but i inserted my user names and password and the proxy settings are rite... but still it wont start downloading ??? help!!!!!!
Left by awe on Aug 17, 2009 6:57 AM

# re: (407) Proxy Authentication Required.
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# re: (407) Proxy Authentication Required.
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# re: (407) Proxy Authentication Required.
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# re: (407) Proxy Authentication Required.
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Hi,

I created an SSRS report using SAP BI Cube as DataSource.
The report is running in Visual studio and Local Report Manager.
I deployed the report to Production Report Manager(Remote Server),when i run the report in Production Report Manager it is giving the below error.
"The remote server returned an error: (407) Proxy Authentication Required."

Please, someone help me in this case.

Br,
Sreenivasulu Athota

Left by Athota on Sep 08, 2010 4:09 AM

# re: (407) Proxy Authentication Required.
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Dim Request As HttpWebRequest = HttpWebRequest.Create(TextBox2.Text)

Dim oProxy As New WebProxy("host", ip)
oProxy.Credentials = New NetworkCredential("username_server", "pass_server")
Request.Proxy = oProxy
Request.Credentials = New NetworkCredential("usename_website", "pass_website")
Request.Method = "POST"

Dim Response As HttpWebResponse = Request.GetResponse
Dim sR As IO.StreamReader = New IO.StreamReader(Response.GetResponseStream)
Dim Source As String = sR.ReadToEnd
TextBox1.Text = Source

what s the problem with this code???
first i have to pass server proxy then i have to log in to the a web site...
Left by mhmm on Sep 26, 2010 1:13 PM

# re: (407) Proxy Authentication Required.
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Hi,

I have a same problem:

--- This is my code

System.Net.HttpWebRequest req = (System.Net.HttpWebRequest)HttpWebRequest.Create("Url here");
System.Net.WebProxy objProxy = new System.Net.WebProxy("Proxy Server", "true");
objProxy.Credentials = new System.Net.NetworkCredential("ProxyUserName", "ProxyPassword");
req.Proxy = objProxy;
System.Net.HttpWebResponse resp = (System.Net.HttpWebResponse)req.GetResponse(); //Error occur here

The reason: My network use proxy, but i not join domain. When i open the Url on IE, it'll show a dialog to authentication user and pass. Is work ok!
But, when i trying to request from my C# code (on the top), is not work and raised this error.

How to i fix it?

Pls help me.
Thanks
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m nt a computer geek, these codes are like codes to me. where do i put them. me too is facing the same problem. pls explain how to do it in as simple language as possible pls.....
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Hey friends,

Just try this if you are getting this error in APEX EXPLORER of SFDC.

put Proxy server same as the proxy name you are finding in the Internet settings of your IE and Port as 8080

This will resolve your issue.
Left by Akash Agamya on May 25, 2011 4:04 AM

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when ever i try to run apt-get update or try to install any software it gives me this error i am using ubuntu 10.04
Left by padmakar on Jul 20, 2011 10:27 PM

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Hi friends,

I'm an ubuntu beginner I have the same problem when trying to install squid as required before configuring terminal proxy.

need help.

thanks in advance
Left by Kanaan on Aug 03, 2011 1:42 PM

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Left by Bala on Aug 07, 2011 10:12 PM

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where do you insert those codes, my pc is on a LAN network server and utorrent pops out those errors, but i inserted my user names and password and the proxy settings are rite... but still it wont start downloading ??? help!!!!!!
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i'm trying to upload some pics on a website through java uploader but i'm getting this error how to avoid it??
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i have problem in opening autoblog samurai software where the authentication of 407 proxy is required,.... could u plz help me in this matter..thank u
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i'm trying to upload some pics on a website through java uploader but i'm getting this error how to avoid it??
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I get the remote server returned an error unexpected response 407 proxy authentication required error while accessing the bing map service in plug-in. I used this service to caluculate the geocode i.e latitude and longitude.

Please advice!
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# re: (407) Proxy Authentication Required.
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I have used the bulk sms XL software but when i send the sms the error is coming " 407 Proxy authentication required" but i used the CC Proxy Server please suggest what can I do plz provide the solution on urgent basis
Left by Rajan on Feb 02, 2013 1:14 AM

# re: (407) Proxy Authentication Required.
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The remote server returned an error: (407) Proxy Authentication Required.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Net.WebException: The remote server returned an error: (407) Proxy Authentication Required.

Source Error:


AdminAuthentication.VerifyAdmin();


Stack Trace:


[WebException: The remote server returned an error: (407) Proxy Authentication Required.]
[ProtocolException: The remote server returned an unexpected response: (407) Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ).]
System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) +10618399
System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) +336

Please reply asap...I m working on it very long time

Left by sakshi on Aug 11, 2013 11:55 PM

# re: (407) Proxy Authentication Required.
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I am facing same problem with .Net 3.5 application, Can you please send the solution
Left by viral on Feb 28, 2014 7:43 AM

# re: (407) Proxy Authentication Required.
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HI Bro,

We have a proxy server and each user as an authentication to loggin in to there own account and access the proxy.
For WSUS i am not able to synchronize the update from microsoft, Please let me know where the coding need to be changed.
Please advice
Left by Dhamodar on May 21, 2014 4:24 PM

# re: (407) Proxy Authentication Required.
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which file do we need to make the change in ???
Left by rohit on Jul 08, 2014 6:07 PM

# re: (407) Proxy Authentication Required.
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hi,we provide online training & video tutorial for soapui
for free videos refer
http://soapui-tutorial.com/soapui-tutorial/introduction-to-webservices/
Left by sejal on Jul 11, 2016 5:48 PM

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