I'm running the tutorial code in ASP.NET MVC application.
It works against Tableau Public.
The same error (i.e. "Access Denied") occurs when I'm debugging the application in Visual Studio 2012.
However, everything works fine in runtime mode (i.e. outside VS).
I'm running IE10 on WIN8.
I mentioned that following error is raised in Chrome:
My application runs under this "xxxxx.local" domain while debugging.
It will be nice to hear someone from Tableau in regards to this problem.