If you want to enable two-step verification for your Microsoft Account, Microsoft pushes you to install and use their own Microsoft Authenticator App. It is available for Android, iOS and Windows 10 Mobile. If you have a smartphone with this app installed and configured, you get the benefit of signing in faster, without having to type the security code that is required for two-step verification. You get a notification on your smartphone with two options: Approve or Deny. Tap one of them and you are done. Here’s how to set up the Microsoft Authenticator app on your Android smartphone, so that you can quickly approve or deny sign in requests to your Microsoft account: