iTunes and iCloud: Mail, Contacts, Calendars and Tasks don't sync or update when using Microsoft Office Click-to-Run
If you're running Microsoft Office using Click-to-Run, Outlook will not appear as a selectable option for syncing your data with either iTunes or iCloud Control Panel.
To use either iTunes or iCloud Control Panel to keep your mail, contacts, calendars, and tasks updated between your iOS devices and Microsoft Outlook, a full version of Microsoft Outlook 2013 or 2010 must be installed on your hard drive.
This document will be updated as more information becomes available.
Important: Mention of third-party websites and products is for informational purposes only and constitutes neither an endorsement nor a recommendation. Apple assumes no responsibility with regard to the selection, performance or use of information or products found at third-party websites. Apple provides this only as a convenience to our users. Apple has not tested the information found on these sites and makes no representations regarding its accuracy or reliability. There are risks inherent in the use of any information or products found on the Internet, and Apple assumes no responsibility in this regard. Please understand that a third-party site is independent from Apple and that Apple has no control over the content on that website. Please contact the vendor for additional information.