Hi, you can go to Outlook.com to transfer contacts from iPhone to outlook on Win 8.
From the Home screen, select “Settings“.
Choose “Mail, Contacts, Calendars”.
If this is the first time you have setup items in this area, select “Outlook.com“. Otherwise, select “Add Account” > “Outlook.com“.
Enter your Outlook.com data in the “Email” and “Password” fields. Also give the account a description you can use to identify it. Example: “Marty’s Outlook”.