This process does not work with Windows 10 app, OUTLOOK. I've tried multiple methods to try and sych Outlook contacts to Galaxy S7 Sprint. Even changed Samsung account to direct email sych with new @outlook alias
You can use Android assistant tool,which can help you import contacts from PC to device easily.
I recommend you to try Samsung Messages Backup.
It can import/export contacts, text messages, call logs, apps, photos, music, movie, books, etc. from Android mobile phones and tablets to computer.