In order to export org-mode documents to Microsoft Word I took the following steps:
Install Cygwin, and specifically the unzip executable. (I read Info-Zip seems to work, but haven't tried it myself.)
Set the preferred output format to docx :
(require 'ox-odt) (setq org-odt-preferred-output-format "docx") ;; Add cygwin to the execpath on windows to be able to export to ODF (when (eq system-type 'windows-nt) (add-to-list 'exec-path "C:\\cygwin64\\bin"))
Org-mode requires soffice executable for document conversion, which is part of LibreOffice. I installed the portable version of LibreOffice. Be sure to add the App\libreoffice\program directory to your PATH
Finally, restart Emacs.