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Microsoft has implemented system-preferred multifactor authentication, meaning it will always use the most secure method you have configured. You can learn more about system-preferred MFA at Microsoft's learning page here: https://learn.microsoft.com/en-us/entra/identity/authentication/concept-system-preferred-multifactor-authentication. The top system-preferred method is an authenticator app. We recommend the Microsoft Authenticator app.
You can configure which method will be used if the system-preferred method is not available.
- Go to https://mysignins.microsoft.com/security-info.
- Where it says "Sign-in method when most advisable is unavailable: [current sign-in method]" click Change.
- Click the drop-down menu and select the method you wish to use. The default authentication method is to use the free Microsoft Authenticator app (Highly recommended). It is available for iOS and Android. If you have it installed on your mobile device, select Next and follow the prompts to add this account. If you don't have it installed there is a link provided to download it. You can also simply search for it on the App Store or Google Play store by searching for "Microsoft Authenticator"
Tip: For a faster and more secure experience, we recommend using an authenticator app rather than SMS verification.
If you do not see the method you'd prefer to use, then cancel out of the prompt and click the Add method option right underneath and follow the on-screen steps on how to set up your preferred method. If you have any questions, please contact the IT Support Center: 325-674-5555, support@acu.edu, acu.edu/support.