If you want to back up your contact then outlook provide backup facilities and for this, you just follow the simple steps-
Steps to Backup the contact list:-
- First, connect to your Outlook.com account and select the “People” menu.
- You can also access this menu by sign-in in at https://people.live.com.
- Click on the Manage “menu” and go to the “Export” option.
- A .csv file will be created and downloaded to your PC.