I have a Samsung Google Nexus phone and use it with Exchange at Outlook.com.
Everthing works fine to sync expect for contacts from the phone to Outlook. When I make changes to a contact in Outlook it syncs fine to the contacts on the phone. But if I edit or add phone number etc.. in my phone contacts it does not sync to Outlook.
Been searching for solution and found some users reporting that both way syncing does not work for contacts but nothing only one way syncing.
Calendar and emails works fine both ways.