Forum Discussion
iOS 11 and Exchange 2016:/Exchange Online: Not Kissing Cousins
Apple released iOS 11 and found that the mail app cannot connect to Exchange Online or Exchange 2016. It’s all to do with HTTP2 connections. Apple tries to connect via ActiveSync but doesn’t do so th...
Hi, I have updated iOS 11 on my iPhone 6 and works fine.
Exchange Online and Outlook.com run inside a massive environment spread over > 100,000 mailbox servers in multiple datacenter regions. It is possible that your client connected to a server that was willing to negociate an ActiveSync connection. In otherwords, you could be lucky. But the situation is that both MIcrosoft and Apple have acknowledged that a problem exists and needs to be fixed. If you upgrade to iOS 11, you take a chance that mail will continue working (unless you use Outlook for iOS).
TR