When trying to install the SmartConnect web service on IIS 7.0, the ASP.NET v2.x extensions need to be allowed in web service extensions. If they do not appear in there, you must register them in order to get them listed.
Open up a command prompt window. (Start – Run – type in CMD and hit enter) If you are on a 32 bit machine, type the following and hit enter: cd
If you are on a 64 bit machine type the following and hit enter:
Then type the following command and hit enter: aspnet_regiis.exe -i Then type the following command and hit enter: iisreset The ASP.NET extensions should now show in the web service extensions window.