Yesterday I hat to configure a webservice, I stumbled into this error.
I fould and tried serveral solutions blogs.iis.net but none of them lead to a solution.Together with the guys from ADA ICT Devsquad’s Blog we found the solution.
Open your web.config and search for:
<system.serviceModel>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
</system.serviceModel>
After switching this to false it works. More info about this parm! msdn.microsoft.com