ASP.NET web service in web.config

 put inside tag <system.web>
<webservices>
<protocols>
<add name="AnyHttpSoap"/>
<add name="HttpGet"/>
<add name="HttpPost"/>
<add name="HttpPostLocalhost"/>
<add name="HttpSoap"/>
<add name="HttpSoap12"/>
<add name="Documentation"/>
</protocols>
</webservices>