title: IIS6 | Application Pools | ASP.NET Framework
body: <p>In IIS6 it's possible to have more than one ASP.NET application running in the same application pool.  This is fine, except that there is nothing in IIS6 that prevents you from running multiple .NET versions in the same pool.  </p>
  
  <p>When you create application pools in IIS7 you must explicitly state was .NET version will be running in that pool.  Running multiple .NET versions in IIS7, in the same application, is impossible.</p>
  
  <p>How can I enforce such rules on my IIS6 server in order to prevent my deployment team from creating such problems?</p>