Azure web app call wcf 404

Question

Azure web app call wcf 404

Jeremy Liu 0

Why is it that after deploying an asp .net web app to azure web app, https://hk-np-focz-aps-ipe-dev-grg5a4dndackdrge.eastasia-01.azurewebsites.net/PriceTag.svc?wsdl can be accessed, but the call interface returns HTTP/1.1 404 Not Found. The local call to this webservice interface is successful. I think my webconfig configuration is OK, and I can see my files on kudu.

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Answer 1

Danny Nguyen (WICLOUD CORPORATION) 165 Microsoft External Staff

Hi @Jeremy Liu,

Because the description of your problem is quite brief, I would like to ask a few question first:

Can you confirm the exact URL you are using to call the WCF service from the deployed app which returns the HTTP/1.1 404 Not Found? If so can you provide me the code of your service interface and service? Does this happen with specific services only?
Did you make any changes to the web.config file for the WCF service after deployment?
Are there any specific error messages or logs from Azure that could give more insight into the issue?

In the mean time, here are a few things you can check:

Check WCF Service Configuration: Ensure that your web.config file has the correct settings for the WCF service. Specifically, verify the service's endpoint configurations and make sure the address is accurate.
URL Routing: Since the WCF service can be accessed via the provided WSDL URL, double-check that the URL you use for calling the service method (not the WSDL) is correct and follows the expected structure of the service.

You can check out these threads with similar issues and see if they help:

Please let me know if any of these suggestions help resolve the issue, or feel free to share more details so I can assist further.

Jeremy Liu 0 Reputation points

2025-06-21T02:04:05.1233333+00:00
Hi Danny1. My url is https://hk-np-focz-aps-ipe-dev-grg5a4dndackdrge.eastasia-01.azurewebsites.net/MySVC.svc,which is create with wsdl in SOAP UI

Here are my pseudocode

[ServiceContract]

public interface IMySVC

{

[OperationContract] [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, UriTemplate = "GetData")] System.Xml.Linq.XElement GetData(System.Xml.Linq.XElement XmlRequest);

}

public class MySVC : IMySVC

{

public XElement GetData( XElement XmlRequest) { //code logic.... }

}

2 When I run the project locally, I can successfully access the WCF interface through the soap UI. So I think the configuration is fine. I did not change the webconfig file after deployment.

many thanks for your reply , let me know if need any detials
Danny Nguyen (WICLOUD CORPORATION) 165 Reputation points Microsoft External Staff

2025-06-23T10:36:52.3+00:00

Hey Jeremy, sorry for the late reply.

Just to clarify—are you using WCF REST or WCF SOAP for your service?

From the interface you provided, it looks like your service is configured with [WebInvoke], which typically indicates a REST-style WCF service. If that's the case, trying to call it using SOAP (via WSDL in SOAP UI) might not work as expected, since REST endpoints don’t expose traditional WSDLs for SOAP clients.

if you intend to use both end points, I suggest checking this thread out:

REST / SOAP endpoints for a WCF service - Stack Overflow

If my assumption is wrong, could you provide your web.config?
Danny Nguyen (WICLOUD CORPORATION) 165 Reputation points Microsoft External Staff

2025-06-27T04:11:32.6833333+00:00

Hey Jeremy, just wanted to see if that fix did the trick. Let me know if anything new popped up or if you need a hand with anything else.
Jeremy Liu 0 Reputation points

2025-06-27T06:43:29.33+00:00

Hello Danny

sorry for late reply, yes i m using WCF SOAP for my service.

and if i use http to call my wsf soap endpoint, it's work, WCF service deploy to web app, and https call return 404, but http working and response success.
Danny Nguyen (WICLOUD CORPORATION) 165 Reputation points Microsoft External Staff

2025-06-27T10:20:48.9133333+00:00
Hi Jeremy,

Thank you for your response.

Just to clarify, you're able to access the web app over both HTTP and HTTPS on Azure, but you're encountering issues specifically when making SOAP calls to the service—does that sound correct?

If so, please check Web.config file to ensure the following section is included within <system.serviceModel>:

<protocolMapping> <add binding="basicHttpsBinding" scheme="https" /> </protocolMapping>

This configuration helps ensure that HTTPS requests are correctly mapped to the appropriate binding for SOAP calls. If it's not already present, please add it and let me know if the issue persists.

If the issue still persists, please provide me your web.config .

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Azure web app call wcf 404

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