Creating multifactor authentication with windows phone is easy. Follow steps to authenticate and add second layer of security.
Get app from : https://go.microsoft.com/fwlink/p/?LinkId=722777
- Sign in with your account
- You will get notification in your app
- Tap approve
- You will get notification even if your are offline
For any new feature you need windows 10 anniversary update.Without the update, you will receive an older version of the app which only supports two-step verification for work and school accounts.