title: QuickBooksOnline authentication
body: <p>I had implemented (C#, ASP.NET MVC) QBO authentication with button (<a href="https://developer.intuit.com/docs/0025_quickbooksapi/0053_auth_auth/widgets#SIWQB" rel="nofollow">https://developer.intuit.com/docs/0025_quickbooksapi/0053_auth_auth/widgets#SIWQB</a>) and it works</p>
  
  <p>But i don't want to use this button. I tried to pass QBO authentication without button from documentation, and i'm getting access token (that means that authentication passed successeful imho), but when i'm trying to use access token i get an error: </p>
  
  <blockquote>
    <p>message=ApplicationAuthenticationFailed; errorCode=003200;
    statusCode=401</p>
  </blockquote>
  
  <p>Is it possible to pass authentication without QB button? Does anyone have example of such auth?</p>