I created a web site using .NET 4.0 with JSON. I am now trying to host the site on a remote host server (Network Solutions) and I get the following error when I open the web site:

Unrecognized configuration section system.web.extensions in web.config file.

I called their support and they said they can only host .NET 3.5 web sites and not .NET 4.0 (they don't have .NET 4.0 framework on their servers).

Is there a workaround to make this work in a .NET 3.5 framework?

Here is my config file: