title: "The resource cannot be found" when opening a page in IIS hosted asp.net web application
body: <p>I'm hosting a web application (.Net 4.5) to a remote server using IIS 8.5. The application runs well locally and on the remote IIS, however there is a single page "/Reports/ReportsMain.aspx" that causes the error "The resource cannot be found." I made sure that the page exists. 
  I also made sure that the .Net version for the application pool is set to 4.0.However I noticed the following: </p>
  
  <p>1- When I accessed this page remotely for the first time I got a browser "Login" popping up, although there should be no authentication here at all </p>
  
  <p>2- The error page shows at the bottom "Version Information: Microsoft .NET Framework Version: 2.0, ASP.NET Version: 2.0 " although I've set the application pool to 4.0</p>
  
  <p>What could be the problem ? </p>