*See office.com/information for applicable devices. Internet connection required. Internet and mobile telephone usage charges may apply. **Application availability and features vary by platform and device. Publisher, Access and OneNote available on PC only. ***Skype account required. Excludes special, premium and non-geographic numbers. Calls to mobiles are for select countries only. Skype world minutes available in select countries. See FAQ for details.Compatible with Windows 8, Windows 7, Windows Server 2008 R2, or Windows Server 2012. Does not run on Windows XP or Vista.