With Windows 8.1 I used the native Mail app to connect to my company's Exchange server. The setup information required was exactly that of what an Android or iPhone would use. Basically you just needed your OWA URL, your domain, username and password. Simple as that, and you could then sync up with your Exchange account from non-member PC's for email and calendar, same as in OWA, except cached.
I, along with a handful of our other users, have upgraded our personal machines to Windows 10, and the native mail app refuses to talk to Exchange. The same settings are required to set it up. There does not appear to be anything new to the app that would cause Exchange to turn its nose up, but whenever you try to sync up it gives an error:
Something went wrong...
We can't connect to mail.our OWAaddress.com right now.
Make sure you have a connection, then try again.
Error Code: 0x80072ee2
Do I need to change something on our Exchange server to allow this to work properly? Anyone experienced this as well?