OIT Office of Information Technology
| Menu

Microsoft 365 Multi-Factor Authentication - Find and Update Your Security Info

Use these instructions to find and update your current multi-factor authentication for Microsoft 365 settings. Learn more about MFA.

Layout:
one column
two columns

Step 1

Log in to the Microsoft 365 My Account page. Expand the My Account section and select Security Info. You will be prompted to authenticate with MFA. 

Step 2

Check default method

The security info screen will show your Default sign-in method at the top of the page (as shown in screenshot) and list all authentication methods currently connected to your account. 

OIT recommends having Microsoft Authenticator set as your default sign-in method.

Step 3

Add additional methods

Select Add sign-in method to register an additional method. 

Step 4

OIT recommends having at least two methods associated with your account in case you switch phones and need to re-register the app. Methods available at CU Boulder include:

  • Microsoft Authenticator: Recommended default method for most users. To set up, follow our Register and Set Up Microsoft Authenticator App tutorial starting on step 2.
  • Passkeys: A passkey is a secure way to sign in without using text messages, phone calls, or one-time codes. The passkey is a credential stored on a device or in a password manager (like Apple's Face ID, a finger print, or Windows Hello.) 
  • Security Key: A security key is a physical device that users can plug into a computer via USB and authenticates without requiring a code (e.g. YubiKey). 
  • Hardware token: Similar to security keys, hardware tokens are physical devices that display a temporary One-Time Password (OTP) on a small screen or key fob that users type into the login prompt.

Select the method you’d like to use and follow the prompts. If setting up a security key, follow OIT’s tutorials on Setting Up a YubiKey (Mac) or Setting Up a YubiKey (Windows).

Step 5

Change default method

Click Change to update your default authentication method.

Step 6

Available authentication methods connected to your account will appear. Choose your preferred new method and click confirm. As a reminder, OIT recommends using the Microsoft Authenticator app as the default method for most users.