System.Net.WebException: The request failed with HTTP status 404:

[Tim Reynolds]

Our .Net application calls a web method of aplpication 2 that resides on
their Apache server. When I as a developer C#, Studios 2003, make the call to
their web method from my desktop, I receive no exceptions - completes fine.
Their web service url was added as a web reference to our project with no
problem. The following was generated as part of the proxy class:
/// <remarks/>
[System.Web.Services.Protocols.SoapRpcMethodAttribu te("",
RequestNamespace="http://server.webservice.vzot.verizon.com",
ResponseNamespace="http://vrfdvt03:8003/vzot/services/VZOTWebService")]
[return:
System.Xml.Serialization.SoapElementAttribute("get DueDateAvailabilityReturn")]
public DueDateAvailabilityResponse
getDueDateAvailability(DueDateAvailabilityRequest reqObject)
{object[] results = this.Invoke( ("getDueDateAvailability", new object[]
{reqObject});
return ((DueDateAvailabilityResponse)(results[0]));
}

When I deploy my project to the development server and call (using the same
url) the same web method with the same data, I receive the following
exception:

System.Net.WebException: The request failed with HTTP status 404: Not Found.
at
System.Web.Services.Protocols.SoapHttpClientProtoc ol.ReadResponse(SoapClientMessage
message, WebResponse response, Stream responseStream, Boolean asyncCall) at
System.Web.Services.Protocols.SoapHttpClientProtoc ol.Invoke(String
methodName, Object[] parameters) at
VOSE.ActivityManager.VzOT.VZOTWSSoapBindingImplSer vice.getDueDateAvailability(DueDateAvailabilityReq uest reqObject)

Based on this stack trace, all I know is that it was executing the
this.invoke in the code snipet above but don't understand what is causing the
exception and why a different result is encountered on my machine versus dev
server. I am copying the .dll that contains this reference class directly
over.

Please help.

Thanks,
Tim Reynolds
Verizon

[Martin Kulov]

"Tim Reynolds" <ti**********@online.nospam> wrote in message
news:C8**********************************@microsof t.com...

Our .Net application calls a web method of aplpication 2 that resides on
their Apache server. When I as a developer C#, Studios 2003, make the call
to
their web method from my desktop, I receive no exceptions - completes
fine. .... When I deploy my project to the development server and call (using the
same
url) the same web method with the same data, I receive the following
exception:

System.Net.WebException: The request failed with HTTP status 404: Not
Found.

....

Hi Tim,

may be your development server do not see the app2 server. Check if there is
connectivity between them.

Regards,

--
Martin Kulov
http://www.codeattest.com/blogs/martin

MCAD Charter Member
MCSD.NET Early Achiever
MCSD

[Steven Cheng[MSFT]]

Hi Tim,

I think Martin's suggestion is reasonable since the webservice used to work
correctly on dev box , so there should not contains problems in code logic.
And network environment should be the first thing we can check. Also, you
can check the IIS log on the server machine to see whether the request
actually arrive the server...

Thanks,

Steven Cheng
Microsoft Online Support

Get Secure! www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)
--------------------
From: "Martin Kulov" <ku***@bezbokluk.abv.bg>
References: <C8**********************************@microsoft.co m>
Subject: Re: System.Net.WebException: The request failed with HTTP status
404:
Date: Fri, 13 Jan 2006 01:00:05 +0200
Lines: 33
MIME-Version: 1.0
Content-Type: text/plain;
format=flowed;
charset="Utf-8";
reply-type=original
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X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.1830
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Newsgroups: microsoft.public.dotnet.framework.webservices
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Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP14.phx.gbl
microsoft.public.dotnet.framework.webservices:1333 4
X-Tomcat-NG: microsoft.public.dotnet.framework.webservices

"Tim Reynolds" <ti**********@online.nospam> wrote in message
news:C8**********************************@microsof t.com...

Our .Net application calls a web method of aplpication 2 that resides on
their Apache server. When I as a developer C#, Studios 2003, make the call to
their web method from my desktop, I receive no exceptions - completes
fine. ... When I deploy my project to the development server and call (using the
same
url) the same web method with the same data, I receive the following
exception:

System.Net.WebException: The request failed with HTTP status 404: Not
Found.

...

Hi Tim,

may be your development server do not see the app2 server. Check if there
is
connectivity between them.

Regards,

--
Martin Kulov
http://www.codeattest.com/blogs/martin

MCAD Charter Member
MCSD.NET Early Achiever
MCSD

[Tim Reynolds]

Hello Steven,
On the DEV server I did ping the URL we connect to ok using Command prompt
ping command. As for the server itself, it can find it based on the ping.
The server I am calling, since it is an Apache server, would it have an IIS
log? I am unfamiliar with that type of server.

Tim

"Steven Cheng[MSFT]" wrote:

Hi Tim,

I think Martin's suggestion is reasonable since the webservice used to work
correctly on dev box , so there should not contains problems in code logic.
And network environment should be the first thing we can check. Also, you
can check the IIS log on the server machine to see whether the request
actually arrive the server...

Thanks,

Steven Cheng
Microsoft Online Support

Get Secure! www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)
--------------------
From: "Martin Kulov" <ku***@bezbokluk.abv.bg>
References: <C8**********************************@microsoft.co m>
Subject: Re: System.Net.WebException: The request failed with HTTP status
404:
Date: Fri, 13 Jan 2006 01:00:05 +0200
Lines: 33
MIME-Version: 1.0
Content-Type: text/plain;
format=flowed;
charset="Utf-8";
reply-type=original
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.3790.1830
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.1830
Message-ID: <#B**************@TK2MSFTNGP14.phx.gbl>
Newsgroups: microsoft.public.dotnet.framework.webservices
NNTP-Posting-Host: vpn-pppoe-213-240-243-80.megalan.bg 213.240.243.80
Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP14.phx.gbl
Xref: TK2MSFTNGXA02.phx.gbl
microsoft.public.dotnet.framework.webservices:1333 4
X-Tomcat-NG: microsoft.public.dotnet.framework.webservices

"Tim Reynolds" <ti**********@online.nospam> wrote in message
news:C8**********************************@microsof t.com...

Our .Net application calls a web method of aplpication 2 that resides on
their Apache server. When I as a developer C#, Studios 2003, make the

call

to
their web method from my desktop, I receive no exceptions - completes
fine.

...

When I deploy my project to the development server and call (using the
same
url) the same web method with the same data, I receive the following
exception:

System.Net.WebException: The request failed with HTTP status 404: Not
Found.

...

Hi Tim,

may be your development server do not see the app2 server. Check if there
is
connectivity between them.

Regards,

--
Martin Kulov
http://www.codeattest.com/blogs/martin

MCAD Charter Member
MCSD.NET Early Achiever
MCSD

[Tim Reynolds]

Ok - SOmeone told me about the following which I put in my windows exe.config
file and I guess this basicallyi said don't use the default proxy settings
and this resolved the problem.

<system.net>
<!-- don't use system default proxy -->
<defaultProxy>
<proxy usesystemdefault="false"/>
</defaultProxy>
</system.net>

I am not sure if it uses any proxy now, nor how I could tell it to use proxy
for one app connection but not another, but those are other new
questions/issues. This post can be closed....

"Steven Cheng[MSFT]" wrote:

Hi Tim,

I think Martin's suggestion is reasonable since the webservice used to work
correctly on dev box , so there should not contains problems in code logic.
And network environment should be the first thing we can check. Also, you
can check the IIS log on the server machine to see whether the request
actually arrive the server...

Thanks,

Steven Cheng
Microsoft Online Support

Get Secure! www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)
--------------------
From: "Martin Kulov" <ku***@bezbokluk.abv.bg>
References: <C8**********************************@microsoft.co m>
Subject: Re: System.Net.WebException: The request failed with HTTP status
404:
Date: Fri, 13 Jan 2006 01:00:05 +0200
Lines: 33
MIME-Version: 1.0
Content-Type: text/plain;
format=flowed;
charset="Utf-8";
reply-type=original
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.3790.1830
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.1830
Message-ID: <#B**************@TK2MSFTNGP14.phx.gbl>
Newsgroups: microsoft.public.dotnet.framework.webservices
NNTP-Posting-Host: vpn-pppoe-213-240-243-80.megalan.bg 213.240.243.80
Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP14.phx.gbl
Xref: TK2MSFTNGXA02.phx.gbl
microsoft.public.dotnet.framework.webservices:1333 4
X-Tomcat-NG: microsoft.public.dotnet.framework.webservices

"Tim Reynolds" <ti**********@online.nospam> wrote in message
news:C8**********************************@microsof t.com...

Our .Net application calls a web method of aplpication 2 that resides on
their Apache server. When I as a developer C#, Studios 2003, make the

call

to
their web method from my desktop, I receive no exceptions - completes
fine.

...

When I deploy my project to the development server and call (using the
same
url) the same web method with the same data, I receive the following
exception:

System.Net.WebException: The request failed with HTTP status 404: Not
Found.

...

Hi Tim,

may be your development server do not see the app2 server. Check if there
is
connectivity between them.

Regards,

--
Martin Kulov
http://www.codeattest.com/blogs/martin

MCAD Charter Member
MCSD.NET Early Achiever
MCSD

[Steven Cheng[MSFT]]

Thanks for your response Tim,

Sorry that I've missed your point on using apache server. Anyway, Glad that
you've figured out the problem through configuring the .net application's
proxy setting. For the proxy, we can also programmatically configure it
for or webservice proxy( or HttpWebRequest component) through its Proxy
property. e.g:

MyMath.Math math = new MyMath.Math();

IWebProxy proxyObject = new WebProxy("http://proxyserver:80", true);
math.Proxy = proxyObject;

int total = math.Add(8, 5);

Thanks,

Steven Cheng
Microsoft Online Support

Get Secure! www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)


--------------------
Thread-Topic: System.Net.WebException: The request failed with HTTP status 4
thread-index: AcYYalbeGWccHlLwTLeMFtU+51ygvg==
X-WBNR-Posting-Host: 192.76.82.90
From: =?Utf-8?B?VGltIFJleW5vbGRz?= <ti**********@online.nospam>
References: <C8**********************************@microsoft.co m>
<#B**************@TK2MSFTNGP14.phx.gbl>
<gw**************@TK2MSFTNGXA02.phx.gbl>
Subject: Re: System.Net.WebException: The request failed with HTTP status 4
Date: Fri, 13 Jan 2006 09:54:02 -0800
Lines: 98
Message-ID: <A3**********************************@microsoft.co m>
MIME-Version: 1.0
Content-Type: text/plain;
charset="Utf-8"
Content-Transfer-Encoding: 7bit
X-Newsreader: Microsoft CDO for Windows 2000
Content-Class: urn:content-classes:message
Importance: normal
Priority: normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
Newsgroups: microsoft.public.dotnet.framework.webservices
NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGXA01.phx.gbl!TK2MSF TNGXA03.phx.gbl
microsoft.public.dotnet.framework.webservices:1335 1
X-Tomcat-NG: microsoft.public.dotnet.framework.webservices

Ok - SOmeone told me about the following which I put in my windows
exe.config
file and I guess this basicallyi said don't use the default proxy settings
and this resolved the problem.

<system.net>
<!-- don't use system default proxy -->
<defaultProxy>
<proxy usesystemdefault="false"/>
</defaultProxy>
</system.net>

I am not sure if it uses any proxy now, nor how I could tell it to use
proxy
for one app connection but not another, but those are other new
questions/issues. This post can be closed....

"Steven Cheng[MSFT]" wrote:

Hi Tim,

I think Martin's suggestion is reasonable since the webservice used to work correctly on dev box , so there should not contains problems in code logic. And network environment should be the first thing we can check. Also, you can check the IIS log on the server machine to see whether the request
actually arrive the server...

Thanks,

Steven Cheng
Microsoft Online Support

Get Secure! www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)
--------------------
From: "Martin Kulov" <ku***@bezbokluk.abv.bg>
References: <C8**********************************@microsoft.co m>
Subject: Re: System.Net.WebException: The request failed with HTTP status
404:
Date: Fri, 13 Jan 2006 01:00:05 +0200
Lines: 33
MIME-Version: 1.0
Content-Type: text/plain;
format=flowed;
charset="Utf-8";
reply-type=original
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.3790.1830
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.1830
Message-ID: <#B**************@TK2MSFTNGP14.phx.gbl>
Newsgroups: microsoft.public.dotnet.framework.webservices
NNTP-Posting-Host: vpn-pppoe-213-240-243-80.megalan.bg 213.240.243.80
Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP14.phx.gbl
Xref: TK2MSFTNGXA02.phx.gbl
microsoft.public.dotnet.framework.webservices:1333 4
X-Tomcat-NG: microsoft.public.dotnet.framework.webservices

"Tim Reynolds" <ti**********@online.nospam> wrote in message
news:C8**********************************@microsof t.com...

Our .Net application calls a web method of aplpication 2 that resides on
their Apache server. When I as a developer C#, Studios 2003, make the

call

to
their web method from my desktop, I receive no exceptions - completes
fine.

...

When I deploy my project to the development server and call (using the
same
url) the same web method with the same data, I receive the following
exception:

System.Net.WebException: The request failed with HTTP status 404: Not
Found.

...

Hi Tim,

may be your development server do not see the app2 server. Check if there
is
connectivity between them.

Regards,

--
Martin Kulov
http://www.codeattest.com/blogs/martin

MCAD Charter Member
MCSD.NET Early Achiever
MCSD

[=?Utf-8?B?U2Fs?=]

I've been searching around the forums for answers to this but not finding
anything substantial. My env is XP Pro / .NET 2.0. The web service in
question is written in Java on a WebLogic box. I can open the wsdl in IE and
see/invoke the methods exposed to me on the box in question. But when I try
to run code that uses the same service I get the error above. I have
another box (Win2003/.NET 2) which runs the same code fine. I can't help but
think it is a configuration problem on my first XP machine.

I know this is kind of general but can anyone provide a quick checklist to
start? Any feedback appreciated.

Thanks in advance.

Sal

"Steven Cheng[MSFT]" wrote:

Thanks for your response Tim,

Sorry that I've missed your point on using apache server. Anyway, Glad that
you've figured out the problem through configuring the .net application's
proxy setting. For the proxy, we can also programmatically configure it
for or webservice proxy( or HttpWebRequest component) through its Proxy
property. e.g:

MyMath.Math math = new MyMath.Math();

IWebProxy proxyObject = new WebProxy("http://proxyserver:80", true);
math.Proxy = proxyObject;

int total = math.Add(8, 5);

Thanks,

Steven Cheng
Microsoft Online Support

Get Secure! www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)


--------------------
Thread-Topic: System.Net.WebException: The request failed with HTTP status 4
thread-index: AcYYalbeGWccHlLwTLeMFtU+51ygvg==
X-WBNR-Posting-Host: 192.76.82.90
From: =?Utf-8?B?VGltIFJleW5vbGRz?= <ti**********@online.nospam>
References: <C8**********************************@microsoft.co m>
<#B**************@TK2MSFTNGP14.phx.gbl>
<gw**************@TK2MSFTNGXA02.phx.gbl>
Subject: Re: System.Net.WebException: The request failed with HTTP status 4
Date: Fri, 13 Jan 2006 09:54:02 -0800
Lines: 98
Message-ID: <A3**********************************@microsoft.co m>
MIME-Version: 1.0
Content-Type: text/plain;
charset="Utf-8"
Content-Transfer-Encoding: 7bit
X-Newsreader: Microsoft CDO for Windows 2000
Content-Class: urn:content-classes:message
Importance: normal
Priority: normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
Newsgroups: microsoft.public.dotnet.framework.webservices
NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGXA01.phx.gbl!TK2MSF TNGXA03.phx.gbl
Xref: TK2MSFTNGXA02.phx.gbl
microsoft.public.dotnet.framework.webservices:1335 1
X-Tomcat-NG: microsoft.public.dotnet.framework.webservices

Ok - SOmeone told me about the following which I put in my windows
exe.config
file and I guess this basicallyi said don't use the default proxy settings
and this resolved the problem.

<system.net>
<!-- don't use system default proxy -->
<defaultProxy>
<proxy usesystemdefault="false"/>
</defaultProxy>
</system.net>

I am not sure if it uses any proxy now, nor how I could tell it to use
proxy
for one app connection but not another, but those are other new
questions/issues. This post can be closed....

"Steven Cheng[MSFT]" wrote:

Hi Tim,

I think Martin's suggestion is reasonable since the webservice used to

work

correctly on dev box , so there should not contains problems in code

logic.

And network environment should be the first thing we can check. Also,

you

can check the IIS log on the server machine to see whether the request
actually arrive the server...

Thanks,

Steven Cheng
Microsoft Online Support

Get Secure! www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)
--------------------
From: "Martin Kulov" <ku***@bezbokluk.abv.bg>
References: <C8**********************************@microsoft.co m>
Subject: Re: System.Net.WebException: The request failed with HTTP status
404:
Date: Fri, 13 Jan 2006 01:00:05 +0200
Lines: 33
MIME-Version: 1.0
Content-Type: text/plain;
format=flowed;
charset="Utf-8";
reply-type=original
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.3790.1830
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.1830
Message-ID: <#B**************@TK2MSFTNGP14.phx.gbl>
Newsgroups: microsoft.public.dotnet.framework.webservices
NNTP-Posting-Host: vpn-pppoe-213-240-243-80.megalan.bg 213.240.243.80
Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP14.phx.gbl
Xref: TK2MSFTNGXA02.phx.gbl
microsoft.public.dotnet.framework.webservices:1333 4
X-Tomcat-NG: microsoft.public.dotnet.framework.webservices

"Tim Reynolds" <ti**********@online.nospamwrote in message
news:C8**********************************@microsof t.com...

Our .Net application calls a web method of aplpication 2 that resides on
their Apache server. When I as a developer C#, Studios 2003, make the

call

to
their web method from my desktop, I receive no exceptions - completes
fine.

...

When I deploy my project to the development server and call (using the
same
url) the same web method with the same data, I receive the following
exception:
>
System.Net.WebException: The request failed with HTTP status 404: Not
Found.

...

Hi Tim,

may be your development server do not see the app2 server. Check if there
is
connectivity between them.

Regards,

--
Martin Kulov
http://www.codeattest.com/blogs/martin

MCAD Charter Member
MCSD.NET Early Achiever
MCSD

[John Saunders [MVP]]

"Sal" <Sa*@discussions.microsoft.comwrote in message
news:22**********************************@microsof t.com...

I've been searching around the forums for answers to this but not finding
anything substantial. My env is XP Pro / .NET 2.0. The web service in
question is written in Java on a WebLogic box. I can open the wsdl in IE
and
see/invoke the methods exposed to me on the box in question. But when I
try
to run code that uses the same service I get the error above. I have
another box (Win2003/.NET 2) which runs the same code fine. I can't help
but
think it is a configuration problem on my first XP machine.

I know this is kind of general but can anyone provide a quick checklist to
start? Any feedback appreciated.

Sal, maybe you should start this discussion with a new post. Those of us
using a newsreader don't have access to the original thread from 2006.

Here are a few blind suggestions:

It's kind of obvious, but if you're getting a 404 status, it is coming from
a web server or other device running the HTTP protocol (a proxy server could
be a culprit). This means that the question becomes "what URL did I request,
and why does the server not know how to find it?" To answer this question,
you'll want to look at the network traffic with your favorite tool (for
instance, Microsoft Network Monitor, or ProxyTrace from
http://www.pocketsoap.com).

You're actually in a good position to solve this problem. Take a look at the
request from the server it works on, and compare it to the server where it
fails. Note that the only interesting part of the request at this point is
the request headers. The body of the request is probably not causing a
"resource not found" error.

You're in luck! This error is happening at the very beginning of the
conversation between client and server. It doesn't even have anything to do
with the code in the web service!

--
John Saunders [MVP]

[=?Utf-8?B?Q2hyaXN0aWFuIFRvcnZuZXM=?=]

I also had this problem in a .NET 1.1 windows application communicating with
a web service.

It turned out that the web service URL was fine and there were no proxy
issues either. In my case the problem was solved by simply deleting the web
service reference and recreating it from scratch.

"John Saunders [MVP]" wrote:

"Sal" <Sa*@discussions.microsoft.comwrote in message
news:22**********************************@microsof t.com...

I've been searching around the forums for answers to this but not finding
anything substantial. My env is XP Pro / .NET 2.0. The web service in
question is written in Java on a WebLogic box. I can open the wsdl in IE
and
see/invoke the methods exposed to me on the box in question. But when I
try
to run code that uses the same service I get the error above. I have
another box (Win2003/.NET 2) which runs the same code fine. I can't help
but
think it is a configuration problem on my first XP machine.

I know this is kind of general but can anyone provide a quick checklist to
start? Any feedback appreciated.

Sal, maybe you should start this discussion with a new post. Those of us
using a newsreader don't have access to the original thread from 2006.

Here are a few blind suggestions:

It's kind of obvious, but if you're getting a 404 status, it is coming from
a web server or other device running the HTTP protocol (a proxy server could
be a culprit). This means that the question becomes "what URL did I request,
and why does the server not know how to find it?" To answer this question,
you'll want to look at the network traffic with your favorite tool (for
instance, Microsoft Network Monitor, or ProxyTrace from
http://www.pocketsoap.com).

You're actually in a good position to solve this problem. Take a look at the
request from the server it works on, and compare it to the server where it
fails. Note that the only interesting part of the request at this point is
the request headers. The body of the request is probably not causing a
"resource not found" error.

You're in luck! This error is happening at the very beginning of the
conversation between client and server. It doesn't even have anything to do
with the code in the web service!

--
John Saunders [MVP]