Microsoft started rolling out its two-step verification process on April 17. Also known as two-factor authentication or two-step authentication, the process strengthens your account security by requiring you to enter your password (step 1), then a security code (step 2). The security code can be sent to you by e-mail, SMS, or phone call, or you can use an authenticator app on your mobile device.
Enabling two-step verification on your Microsoft account will enable it across all Microsoft services that currently support two-step verification, like Windows, Outlook.com, Office, and SkyDrive. If you're interested in trying it out, here'… Read more