MFA & Verification Issues

How to Fix Microsoft Verification Code Sent to a Landline Instead of a Mobile Phone

Bushra Parveen Sep 27, 2026 868 views

Question details

The user is unable to access their Microsoft account because the sign-in verification code is being routed to a landline instead of a mobile phone.

How to Fix Microsoft Verification Code Sent to a Landline Instead of a Mobile Phone

Product: Microsoft Account
Device & OS: not provided
Scenario: Attempting to sign in to a Microsoft account that requires multi-factor authentication (MFA).
Observed behavior: The automated system sends the verification code to a registered landline number, preventing the user from receiving an SMS code on their mobile device and blocking account access.

Before you start

Ensure you have access to a backup authentication method, such as an alternative email address or the Microsoft Authenticator app, so you can log in and update your security settings.

Solution 1Recommended

Update Security Info and Authentication Methods Manually

Use this solution if you still have an alternative way to access your Microsoft account to remove the landline and add your mobile phone.

If you can still log in using a password and an alternative verification method (like a secondary email), you can easily update your phone number in the security dashboard.

Sign in to your Microsoft account

Navigate to the Microsoft account security page (account.microsoft.com/security) and sign in using your credentials and any available backup authentication method.

Access Advanced Security Options

Click on 'Advanced security options' to view all the verification methods currently linked to your account.

Remove the landline number

Locate the landline number in the list of authentication methods, click 'Remove', and confirm the action.

Add your mobile phone

Click 'Add a new way to sign in or verify', select 'Show more options' if necessary, and choose 'Text a code'. Enter your correct mobile phone number and verify it using the SMS code sent to your device.

Update Security Info and Authentication Methods Manually

Verification Update Complete: Once updated, future verification codes will be sent via SMS to your newly registered mobile phone.

Solution 2

Contact Your Organization's IT Administrator

Use this solution if you are trying to access a work or school account managed by an organization.

Solution 3

Seek Support on Microsoft Q&A

Use this solution if your issue involves the Microsoft Authenticator app and cannot be resolved through standard account settings.

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Frequently Asked Questions

Why did Microsoft send my verification code to a landline instead of my cell phone?

This typically happens if the landline number was set as your primary contact number or default authentication method when the account was first created or updated.

Can I receive an automated voice call for Microsoft account verification?

Yes, if a landline is configured as your verification method, Microsoft will usually attempt to verify your identity by providing a code via an automated voice call rather than an SMS text message.

How do I remove a landline from my Microsoft account?

Log in to your Microsoft account's Security dashboard, navigate to Advanced security options, locate the landline number under your verification methods, and click Remove.

What should I do if my work account is locked due to verification issues?

For organization-managed accounts, multi-factor authentication methods are controlled by your IT department. You must contact your company's IT administrator to reset your MFA settings so you can add a mobile device.

Login & Account Issues