Getting error in downloading Tamino API for .NET

Respected Sir

i want to download the Tamino API for .NET 4.1.5 for Windows and when i click the btton i accept it gives an error
You are not authorized to view this page
You do not have permission to view this directory or page from the Internet address of your Web browser.

why is that so ? why cant i downlaod please help me in this issue.

Do you end up at this page:

and then you click “I Accept”? When I do I get the zip file downloading.

Please note that the API won’t be much use without a Tamino installation.