This guide is broken into sections to help make it easier to find what you are needing to do.

If you are looking for how to first set up your 2-step verification, head to "Your first time setting up 2-step verification".  
We have sections for how to set up each option that's available.
 
If you need help making changes to your verification options any time later, head to "Changing your options for 2-step verification".
 
The last few sections provide general information you may need to know, such as how to get and Authentication App, get your various Office 365 apps, and information about securing your mobile device.

After you provide your username password, you are going to see a new screen asking for you to provide more information. It will look something like the image below.

Show/Hide image More Information Screen
It will take just a few minutes to set up your additional verification options. Here are the steps you'll need to follow.
  1. Click the next button to continue to set up your default choice for your 2-step verification. The next screen will look something like the image below:
    Show/Hide image2-step Verification Setup Screen
  2. Depending on which option you want to use as your default you'll have different steps to follow. Open the section below that matches your choice.
  3. Setting up an Authenticator App on a mobile device
    Show/Hide instructions
      You will need an Authenticator App already installed on a mobile device to set this up. See the "Getting an Authenticator App" section of this guide on how to do this. The following instructions will go over using the Microsoft Authenticator app. If you are using another authenticator, the instructions will differ.
    1. Watch the following video to see how to set up the Microsoft Authenticator app
    2. You'll need to also set up a phone as a backup. Continue to Step 3 below for those instructions.
  4. Setting up a phone (call or text message)
    Show/Hide instructions
    1. Select Authentication Phone, select the appropriate country code, and type in your phone number.
    2. Choose how you want to be contacted (a call or a text message)
    3. Click next. You'll now be contacted by your chosen method and need to provide the confirmation
  5. You will then be told about app passwords on a screen like the one below titled "Step 4: Keep using your existing applications". Since we use 2-step verification for all of Office 365, you won't need to do anything on this screen. You can just click Done to finish your setup.
  6. Show/Hide imageMore Information Screen
If you use a mobile device to connect to your Office 365 account, you might have some additional steps. See "Setting up Office 365 on your Mobile Device" for those steps

If you wish to use the App options you will need an authenticator app. Microsoft provides an authenticator app for free on Android, iOS,and Windows phone https://www.microsoft.com/en-us/account/authenticator, but you can use any authenticator that supports Time Based One Time Passwords. This includes Authy, Google Authenticator, Symantec VIP, Sophos Authenticator, Dashlane, and more. So, if you already use one, feel free to use it instead of installing a new app.

Did you know? Many services such as Facebook and Amazon also offer 2-step verification. 
You may want to secure your personal accounts as well. The community website https://twofactorauth.org/ is a great way to find out if a service you use has support for 2FA or 2-step verification and links to the sites information on how to set it up. For TOTP support, see if they are listed as having Software Token.
Please note: 2-step verification uses a more secure method of connecting your mobile device to your account. Many apps for email do not yet support it. You will need to either use an app that supports 2-step verification, or use an app password if it doesn't. Information on App Passwords is in the next section.

List of apps supporting 2-step verification

 

For apps that do not support 2-step verification (such as GMail or iOS 10 and before) you won't use your password when asked for it. Instead you'll type in a special app password that you have to first create. Look at the next section of this guide on how to get an app password

An App Password is a special password you create that allows apps that can't use two-step verification to access your account. It takes just a few minutes to do.

To get an App Password, follow Microsoft's Guide. Skip the first section, and start at the next section titled "To Create another app password". When you create the password, give it a meaningful name in case you ever need to delete it (such as if you lose your device).

For MiCollab: you'll need to paste the app password into the Exchange Password when asked for it

For Mobile Devices: at step 7, instead of copying the password to your clipboard you will need to type it in to your app when it asks for your password.

Important! App passwords bypass two-step verification and should be used rarely and with great caution. Do not ever write down, store, or share this password. Always create a new password when needed and delete unneeded ones at the same time.

Secure your device! If you are connecting your device to Office 365 or using your cell phone number to receive codes you will want to have your device secured.

Your device should have a lock screen that is more than just a swipe, pin, or pattern to unlock. Use a password or biometric (fingerprint/face recognition) to secure your device. Don't share your device with others. If you do, such as with a spouse or child, treat it like a shared/public computer. Don't access Office 365 through an app but instead log in and out of the web.

Remember, your Office 365 account is yours for use with Graceland and come with additional security requirements by policy, don't let others have access to it!