Open the Machine.config file in a text editor. (The default installation places Machine.config in the \Config subdirectory of the installation root.)

Comment out the lines within the webServices section that add support for HTTP-GET and HTTP-POST, if they exist. After doing so, the webServices section should look like the following:

<webServices>
    <protocols>
      <add name="HttpSoap"/> 
         <!-- <add name="HttpPost"/> --> 
         <!-- <add name="HttpGet"/>  -->
      <add name="Documentation"/>
      <add name="HttpPostLocalhost"/>
    </protocols>
</webServices>

Save Machine.config.

This configuration change takes effect on the next request to a Web service hosted on that machine.

Open the Web.config file in the root directory of the Web application in a text editor. (If a Web.config file does not exist, create one.)

Modify the webServices section of Web.config to explicitly remove the protocol setting. The following example explicitly removes the HTTP-POST and HTTP-GET protocols:

<webServices>
     <protocols>
       <remove name="HttpPost" />
       <remove name="HttpGet" />
     </protocols>
</webServices>

Save Web.config.

This configuration change takes effect on the next request to a Web service hosted by the Web application.