Server Application unavailable when browse to WCF service

Question

Hi,I have a WCF Service hosting in IIS. It in Windows Server 2008. When i try to browse to the WCF service using any internet browser, it gave me an error:Server Application Unavailable The web application you are attempting to access on this web server is currently unavailable.  Please hit the "Refresh" button in your web browser to retry your request.Administrator Note: An error message detailing the cause of this specific request failure can be found in the application event log of the web server. Please review this log entry to discover what caused this error to occur.I have no problem browse to any other web service and web application hosting in the IIS. WCF Activation feature is enabled and i did aspnet_regiis in command prompt but still no luck. Is there anything that i had missed out?Any help will be greatly appreciate.Regards,Zack