title: Error in Office Outlook Add-in during Initiallzation
body: <p>I get an error as this when loading my Outlook add-in in the Desktop client:</p>
  
  <pre><code>SCRIPT5022: Office.js has not been fully loaded yet. Please try again later or make sure to add your initialization code on the Office.initialize function.
  </code></pre>
  
  <p>My initialization code looks something like this:</p>
  
  <pre><code>Office.initialize = function (reason) {
      app.initialize();
  
      // set adal.js b2c authentication
      setAuthContext();
  
      // handle any window callback redirections
      authContext.handleWindowCallback();
  
      checkUser();
      setListeners();
  };
  </code></pre>
  
  <p>I tried different variations with the initialize function of Office.js but I get the same error over and over again. This doesn't happen with the same outlook add-in in Outlook online.</p>
  
  <p>Am I doing something wrong with the Office app initialization?</p>