https://technet.microsoft.com/en-us/library/jj219426.aspx
https://answers.microsoft.com/en-us/msoffice/forum/msoffice_o365admin-mso_dep365/offline-install-for-office-365-2016-business/36282a82-d743-4e54-9ab5-f13e1ad210f7
https://technet.microsoft.com/en-us/library/jj219422.aspx#BKMK_DownloadTheODT