title: Getting error Class not registered when try to generate excel file using c#
body: <p>I have generated excel file dynamically using c# code where i refer <code>Microsoft.Office.Interop.Excel</code></p>
  
  <p>on local machine everything working fine.</p>
  
  <p>but when i deployed my application on <code>Windows Azure</code> i'm getting following error when I try to generate excel file and save it.</p>
  
  <pre><code>Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)
  </code></pre>