iOS and iCloud: Does not work as expected with Microsoft Office 2010 using Click-to-Run
iCloud, iPad, iPhone, iPod touch, iTunes 10 for Windows, Microsoft Office 2010
iTunes Syncing and iCloud will not work with Microsoft Outlook 2010 if you are using Click-to-Run. Outlook will not appear as a selectable sync option if you use Click-to-Run in order to run Microsoft Office 2010.
To use iTunes Sync or iCloud with Microsoft Outlook 2010, you need the full version of Microsoft Office 2010. iCloud and iTunes require a full version of Microsoft Office 2010 be installed locally on the hard drive of the computer. For more information concerning Microsoft Office 2010 Click-to-Run, see this Microsoft Support article.
For information on switching from Click-to-Run to a local Microsoft Office installation of Office 2010, see this Microsoft Support article.