Mobile Services and IIS 7.0

If Mobile Services is installed on an IIS 7.0 server, HTTPHandlers are ignored and only handlers are used.

Therefore, you need not change the httpHandlerssection of the web.config file, but must add the following entry underneath the </system.web> (closed system web) tag:

<system.webServer>
 < handlers >
 <add name="mobileServices" verb="POST ,GET " path="mobile.axd"   type="update.web.Services.mobileServices,update.web" />  
</handlers>
</system.webServer>