title: Error:"invalid_grant", Description:"Token has been revoked.", Uri:""
body: <p>I have an MVC app, like explained here: <a href="https://developers.google.com/api-client-library/dotnet/guide/aaa_oauth#web-applications-aspnet-mvc" rel="nofollow">https://developers.google.com/api-client-library/dotnet/guide/aaa_oauth#web-applications-aspnet-mvc</a></p>
  
  <p>From Javascript I make AJAX calls to some Action that uses Google API to get message from Gmail.</p>
  
  <p>At first everything works fine, but after some time I keep receiving </p>
  
  <blockquote>
    <p>Error:"invalid_grant", Description:"Token has been revoked.", Uri:""</p>
  </blockquote>
  
  <p>Can someone explain to me what that means and why I am getting this error ???</p>
  
  <p>Cheers </p>