Following my previous post (one hour ago), we switched our code back to the n-1 version of the Azure Graph API.
With it, we are able to target an Office 365 tenant,create users and assign licences (including Exchange license).
The newly created user is displayed in the Manage user page in Office 365 and we confirm that all licences are checked.
However, when we switch to the Exchange management view, the users are not listed.
I believe that one of the possible reason is that the mail and proxyAddresses attributes are readonly in the Azure graph API SDK and therefore we cannot set them. (we did set otherMail Attributes) but apparently this fills AlternateEmailAddresses.
Do you have a status if/when it will be possible to fully manage Office 365 users using the Azure graph API?
Missing functionalities (as far as I know) : Email Management, Contacts are ReadOnly
-- Emmanuel Dreux http://www.cloudiway.com