How do I change my Microsoft authenticator to SMS?

Ditching the App: Switching Your Microsoft Authenticator to SMS Verification

Microsoft Authenticator offers robust two-factor authentication, but sometimes the convenience of a simple text message is preferable. While you can’t directly replace the Authenticator app with SMS as the sole authentication method for all Microsoft services, you can designate SMS as your default sign-in method for many accounts. This means you’ll receive a verification code via text message instead of needing to open the Authenticator app every time you log in. However, it’s crucial to understand this significantly reduces your security.

Understanding the Security Trade-offs: Using SMS for authentication is generally considered less secure than authenticator apps. SMS messages are susceptible to SIM swapping attacks, where a malicious actor gains control of your phone number and intercepts the verification codes. Authenticator apps, on the other hand, offer better protection because they don’t rely on vulnerabilities in the mobile carrier’s network. Therefore, only use this method if you understand and accept the higher security risk.

How to Set SMS as Your Default Sign-In Method (Where Possible):

The process varies slightly depending on the specific Microsoft service you’re accessing (Outlook, Xbox, etc.), but the general steps are similar:

1. Access your account security settings: This is usually found under a “Security,” “Account,” or “Profile” section within the service’s settings. The exact location depends on the specific Microsoft application or service. Look for options relating to security settings, two-factor authentication, or account verification.

2. Locate the Default sign-in method option: You’ll need to find a setting that allows you to choose your preferred authentication method. This might be labelled as “Default sign-in method,” “Preferred verification method,” or something similar.

3. Select Phone – text (or similar): Once you locate the relevant setting, choose the option that utilizes your phone number for verification via text message. This might be listed as “Phone – text,” “SMS,” or “Text message.”

4. Input your mobile number and confirm: You’ll be prompted to enter your mobile phone number. Microsoft will likely send a verification code to this number to confirm it’s yours. Enter the code to finalize the change.

Important Considerations:

• Not all Microsoft services support SMS as the primary authentication method. Some services might require or strongly recommend the use of an authenticator app for enhanced security.
• Regularly review your security settings. Microsoft regularly updates its security protocols. Periodically reviewing your settings ensures you’re using the most secure options available.
• Consider using a more secure method whenever possible. While convenient, SMS is less secure than authenticator apps. Prioritize using the authenticator app whenever available for maximum security.

By following these steps, you can set SMS as your default sign-in method for some Microsoft accounts, but always prioritize security and understand the risks involved before making this change. If in doubt, stick with the Microsoft Authenticator app for stronger protection.