title: ASP.NET runtime error: Could not load file or assembly 'Interop.CertEnroll'
body: <p>I have a ASP.Net 4.0 site that I am editiing in VS2010. Every @ Master and @ Page tag has the blue squiggle lines giving the following error:</p>
  
  <p>ASP.NET runtime error: Could not load file or assembly 'Interop.CertEnroll' or one of its dependencies. An attempt was made to load a program with an incorrect format.</p>
  
  <p>I know it is related to trying to load a 32bit dll into a 64bit application but I am not sure how to control it since I am not sure how this Iterop.CertEnroll client is evening being referenced.</p>
  
  <p>I am targetting Any CPU for my builds.</p>
  
  <p>My application still functions but it bothers me to see all of these warnings and I have seen hints that this may be causing issue with my AjaxToolkit server tags not being recognized.</p>
  
  <p>Thank you!
  Karl</p>