Office 365 User Provisioning Issue [Unable to create user’s mailbox]
Issue Description When a new user is created in On-Premise active directory which is then synced to Azure AD and a license has been assigned to the user, you get the error: This user’s on-premises mailbox hasn’t been migrated to Exchange Online. The Exchange Online mailbox will be available after migration is completed. Also, you see that the Mailbox is not created for this user in Exchange Online(EXO). Solution: a) Remove msExchMailboxGuid attribute value from the On Premise Active Directory User. b) Remove msExchRecipientDisplayType attribute value. c) Remove msExchRecipientTypeDetails attribute value. d) Move the user to an OU in Active Directory which is not getting synced to Azure Active Directory and run Delta Sync. e) After the …