You have to use the Outlook.com calendar to achieve this.
This link slipstick should help. Your appointments etc have to be in the Outlook.com calendar that will be created in Outlook 2013 and you need to use that rather than the default calendar(s).
I use it for syncing with my W8 laptop but because I use iCloud I do not get auto syncing as I cannot autosync between iCloud and the Outlook.com calendar. Your