User can't see free/busy data in Outlook or OWA in Office 365 Dedicated


In Microsoft Office 365 Dedicated/ITAR, a user or a group of users reports that they can't see free/busy data for one or more other users. This issue affects users of Microsoft Office Outlook 2007, Outlook 2010, or Outlook 2013 clients, or users of Outlook Web App (OWA).


There are many reasons that free/busy data may be unavailable. These include but are not limited to the following: 
  • Autodiscover failure
  • Exchange Web Services (EWS) authentication failure
  • Cross-site proxy failure
  • Availability address space misconfiguration
  • Issues with the Microsoft Federated Gateway 
  • Issues with a third-party coexistence solution


The following questions are helpful in determining the scope of the issue, and the resolution:

ID do Artigo: 2955323 - Última Revisão: 11/08/2016 - Revisão: 1