I have a project which I have upgraded to .Net 4.0, but when I try to access it, I retrieve the following error:
HTTP Error 404.2 - Not Found
The page you reques
I take it you're running on IIS6 right now..
Open the IIS manager, and go to the Web Service Extensions area.. You'll be able to enable .NET 4 in there.. All new extensions are disabled by default :)
If you're running on IIS7, .NET might not have registered in IIS.. Then open up an admin command prompt and navigate to the .NET 4 framework folder (C:\Windows\Microsoft.NET\Framework\v4.{version}). If you're on a 64 bit machine go to the Framework64 folder instead of the Framework folder.
Then run aspnet_regiis -i
in there