Most security experts say that simply securing your e-mail account with a username and password is not enough. They say you should turn on 2-factor authentication whenever possible. That simply means that instead of authenticating your account with one piece of information like a password, you need two pieces of information to log on. I’ve covered how to do this in Gmail and Yahoo! mail in previous articles. Let’s take a look at how to set it up in Outlook.com
Go to your Outlook.com inbox, click the gear icon in the upper-right and choose options.
Under Options, choose Managing your account and then Account details,
Choose Security & privacy at the top and then More security settings under Account security.
Scroll down to Two-step verification and click Set-up two-step verification.
You’ll see a quick overview of the authentication methods available. Read it, then click Next. If you have a smartphone, you can install the Microsoft ID verification app.
I’m going to save the instructions for that for another article and focus on setting up the authentication on your PC. So, I’ll skip that step for now. You’ll receive a a code to use in addition to your username and password. You can choose to not stay logged in on your computer when you access our e-mail and enter this code each time along with your username and password or you can use it as a recovery code should you ever get locked out.