Question

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 requested could not be displayed because of the settings for the list of ISAPI and CGI restrictions on web server.
ErrorCode: 0x800704ec
Handler PageHandlerFactory-ISAPI-4.0_32bit

Do I need to do something extra to the IIS 7 or APP pool, when converting an existing site to a .NET 4.0 site?

Also if I look at ISAPI both 32bit and 64bit of the .Net 4.0 is installed.

Answer 1

In IIS, enable .NET 4.

Here is image: