User Configuration > Administrative Templates > Microsoft Outlook 2016 > Account Settings > E-mail
User
HKCU\software\policies\microsoft\office\16.0\outlook\setup
This policy setting determines whether an Office 365 E-mail account when being configured in Outlook, can use a simplified dialog that can greatly accelerate the initial account creation. If you enable this policy setting, users will configure their Office 365 accounts using the Account Wizard, as they do, for all other account types.