401.2 in my provider hosted app

I kept getting the 401.2 error when I switched from IIS express to IIS to host my Provider hosted web form app. Thanks to this awesome blog (http://blogs.technet.com/b/speschka/archive/2012/11/01/more-troubleshooting-tips-for-high-trust-apps-on-sharepoint-2013.aspx) , I fixed the authentication. Anonymous disabled, Windows Integrated Mode enabled and problem solved.