Export and Import Contacts: Outlook.com (previously: Hotmail, Windows Live Mail)

Microsoft maintains the instructions for different Outlook.com versions here.

For the latest version (when we last checked), the steps were:

1. Go to Outlook.com (if not signed in, click Sign In.)
2. Once signed in, click on the People icon near the bottom left.
3. From the top menu click Manage.
4. From the options that show up, click Export contacts.
5. Choose to export all contacts. You may also select a specific folder if desired.
6. Click Save and contacts.csv will be saved by your browser, typically to your Downloads folder.

Import

Once you have your contacts saved to a file above,  import contacts from that file as explained here.