
Note that Duo Authentication for Windows Logon does not support U2F security keys for online authentication. You can then authenticate with one of the newly-delivered passcodes. To have a new batch of SMS passcodes sent to you click the Send me new codes button. Passcode: Log in using a passcode generated with Duo Mobile, received via SMS, generated by your hardware token, or provided by an administrator.Call Me: Perform phone callback authentication.You can use Duo Push if you've installed and activated Duo Mobile on your iOS or Android device. Duo Push: Send a request to your smartphone.

If auto-push is disabled or if you click the Cancel button on the Duo Prompt, you can select a different device from the drop-down at the top (if you've enrolled more than one) or select any available factor to verify your identity to Duo:

Logging Into Microsoft Windows with Duo.
