I follow this guide ( https://msdn.microsoft.com/en-us/skype/ucwa/authenticationusingazuread ) to try to authenticate and create a Skype application.
My goal is to create a Skype meeting via the API and create the URL of the online meeting.
I can get at least the URL of the application resource.
When I try to send a POST to a URL, I get a 403 Forbidden error. It looks like there might be a problem with the token? However, I use the token in earlier requests to get the application URL.

Any thoughts on what I'm doing wrong?
Mail request:
POST https://webpool.infra.lync.com/ucwa/oauth/v1/applications HTTP/1.1 Connection: Keep-Alive Content-Type: application/json; charset=utf-8 Authorization: Bearer (edited) x-ms-request-root-id: a9c17f66-46d761cf7325d6a7 x-ms-request-id: |a9c17f66-46d761cf7325d6a7.6. Request-Id: |a9c17f66-46d761cf7325d6a7.6.1. Content-Length: 96 Host: webpoolblu0b11.infra.lync.com { UserAgent = UCWA Samples, EndpointId = f87e1d57-83a4-4f9b-aac7-00f05f440637, Culture = en-US }
Message:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"/> <title>403 - Forbidden: Access is denied.</title> <style type="text/css"> <!-- body{margin:0;font-size:.7em;font-family:Verdana, Arial, Helvetica, sans-serif;background:#EEEEEE;} fieldset{padding:0 15px 10px 15px;} h1{font-size:2.4em;margin:0;color:#FFF;} h2{font-size:1.7em;margin:0;color:#CC0000;} h3{font-size:1.2em;margin:10px 0 0 0;color:#000000;} #header{width:96%;margin:0 0 0 0;padding:6px 2% 6px 2%;font-family:"trebuchet MS", Verdana, sans-serif;color:#FFF; background-color:#555555;} #content{margin:0 0 0 2%;position:relative;} .content-container{background:#FFF;width:96%;margin-top:8px;padding:10px;position:relative;} --> </style> </head> <body> <div id="header"><h1>Server Error</h1></div> <div id="content"> <div class="content-container"><fieldset> <h2>403 - Forbidden: Access is denied.</h2> <h3>You do not have permission to view this directory or page using the credentials that you supplied.</h3> </fieldset></div> </div> </body> </html>
Permissions:

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