I had this question after viewing Office 365 Hybrid Exchange - Mailbox provisioning
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I would like to:
Local AD: Create user and sync to Office 365 cloud.
Office 365: Apply appropriate license that includes Exchange email.
Problem and possible reasons: Account created but Exchange mailbox not provisioning. This used to be an old SBS server (upgraded to Win2K12 now). I think it still has old Exchange attributes, How do you rectify this?