Question: Emails read on iOS11 Mail app shows as unread on Outlook
We are running Office 2016 Windows 7. Certain iPhone users use the Mail App to read emails, after reading emails they get into the office and open Outlook and notice the emails they read on the iPhone show as unread in Outlook. We are using Exchange 2016. We have recreated the email account on iPhone, reset network settings, reboot device, recreated Outlook profile, remove ActiveSync and re added with no luck.. Any ideas what may be causing this?
iPhone X, iOS 11.1