SOAP fault client code error in webservices

Question

Hi

I have a webmethod on a webservice(.asmx page), when i try to access in winform client app, i get

 <?xml version="1.0" encoding="utf-8"?>
 <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"&gt;
     <soap:Body>
          <soap:Fault>
             <faultcode>soap:Client</faultcode>
             <faultstring>System.Web.Services.Protocols.SoapException: Server did not recognize the value of HTTP Header SOAPAction: http://url.com/somename/foldername/methodname.
   at System.Web.Services.Protocols.Soap11ServerProtocolHelper.RouteRequest()
   at System.Web.Services.Protocols.SoapServerProtocol.RouteRequest(SoapServerMessage message)
   at System.Web.Services.Protocols.SoapServerProtocol.Initialize()
   at System.Web.Services.Protocols.ServerProtocol.SetContext(Type type, HttpContext context, HttpRequest request, HttpResponse response)
   at System.Web.Services.Protocols.ServerProtocolFactory.Create(Type type, HttpContext context, HttpRequest request, HttpResponse response, Boolean&amp; abortProcessing)
              </faultstring>
              <detail />
         </soap:Fault>
     </soap:Body>
 </soap:Envelope>

* http://url.com/somename/foldername/methodname. => namespace set in webservice page

Any thoughts?

Thanks.