Since SharePoint on Office 365 is now configured with Claims Authentication (SharePoint 2013), I have not been successful in calling the User Profile Service from an InfoPath browser form.
In the On-premise environments, I have been configuring a Secure Store User ID to avoid the 5566 error message, however, when I try to do the same with SharePoint Online, I get an error.
Does anyone have advice on how to configure the data connection and Secure Store to successfully call the User Profile Service in Office 365?