New server is Windows 2008 R2 + IIS 7.5 There are websites working fine there, but were made using latest technologies (MVC4 etc). The website with issues is using Frm 3.5 and was working in Server 2003 IIS6. I moved to the new server and looks like the CSS and JS are not displayed/working. I tried all the other answers to similar issues in StackOverflow and MSDN (yes Static Content is enabled and MIME Types are correct).
Then I change the App Pool of this website to 2.0 Classic (was in Integrated) and is working fine. This is not a solution, sounds to me more a workaround. What I am missing here? The differences between Classic app pool and Integrated does not mention anything in particular, apart that Classic works as IIS6.
PS: Same website in Server 2012 with IIS8 works fine with Integrated App Pool , I am about to get crazy !!!!
Please help !