MFA & Verification Issues

Fix Unable to Sign In After Changing Work Account Password (MFA Issue)

Emma Brown Sep 28, 2026 869 views

Question details

The user is unable to sign into their work account after changing the password because their required secondary verification method is unavailable.

How to Fix Sign-In Issues After Changing a Work Account Password

Product: Microsoft 365, Exchange, Microsoft Entra
Device & OS: not provided
Scenario: Signing in to a work account after a recent password change.
Observed behavior: The sign-in process fails because the system prompts for a second verification method (MFA) that is currently unavailable, blocking access to Exchange email and other services.

Before you start

Verify if you have registered any alternative authentication methods, such as an SMS phone number or secondary email, and ensure you know the contact details for your organization's IT helpdesk.

Solution 1Recommended

Resolve Microsoft Entra MFA and Authenticator Issues

Use this solution if you are locked out due to unavailable MFA methods after a password change.

This issue is generally caused by Microsoft Entra multifactor authentication strictly requiring a second step that is no longer accessible after a password reset.

Check Microsoft Authenticator FAQs

Visit the official Microsoft Authenticator FAQs page to find common troubleshooting steps for accounts requiring re-verification.

Contact your IT Administrator

If you are a standard user, reach out to your organization's IT department. They can revoke your old MFA sessions and require you to re-register a new authentication method on your next sign-in.

Use Microsoft 365 Administrator Support

If you are the sole administrator for the tenant and are locked out, you must contact Microsoft 365 administrator support directly via phone for tenant or administrator recovery.

Ask the Microsoft Community

Post your specific error codes or scenarios in the Microsoft Authenticator community forum (Microsoft Q&A) for advanced troubleshooting assistance from experts.

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1. Download WPS Office: Visit the official WPS website and download the free installation package for your operating system.
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Frequently Asked Questions

Why is Microsoft Authenticator blocking me after a password change?

Changing your password often invalidates existing authentication tokens for security purposes. The system then requires you to re-authenticate using your secondary method, which causes a loop if that method is no longer available.

Can I bypass the authenticator app requirement?

No, if your organization enforces Microsoft Entra multifactor authentication, you cannot bypass it. You must either use an alternative backup method you previously set up, or have your IT admin reset your MFA configuration.

What if I am the only admin and I am locked out of Microsoft 365?

If you are the sole global administrator and cannot pass the MFA prompt, you must contact the Microsoft Data Protection team by phone. They will verify your identity and assist with tenant recovery.

Login & Account Issues