Windows Server 2016 RTM is a problem the forest functional level and domain functional level（Windows Server 2016）
[Install a new Active Directory forest on an Azure virtual network]
Add a Language(Japanese) ->Promote this server to a domain controller
->[Active Directory Domain Services Configration Wizard]
By default, these settings are "Windows Server Technical Preview" in a new forest root domain.
Is There a problem with the display name in the case of the Japanese?