MFA Security Issues

How to Stop Unwanted MFA Prompts in Microsoft 365

Bushra Parveen Oct 1, 2026 869 views

Question details

Users and the Global Administrator continue to receive Authenticator or SMS verification prompts despite disabling per-user multifactor authentication and Security Defaults.

How to Stop Unwanted MFA Prompts in Microsoft 365

Product: Microsoft 365
Device & OS: not provided
Scenario: Attempting to fully disable multifactor authentication (MFA) prompts for users within a Microsoft 365 tenant.
Observed behavior: Authenticator or SMS verification prompts keep appearing even after primary MFA settings and Security Defaults have been turned off in the admin center.

Before you start

Ensure you have Global Administrator privileges in your Microsoft 365 tenant before attempting to modify tenant-wide authentication policies or contact Microsoft Support.

Solution 1Recommended

Open a Service Request with Microsoft Support

Since background Microsoft security processes can enforce MFA, a Global Administrator must contact support to investigate and temporarily modify these sensitive settings.

Microsoft enforces built-in security processes to protect identities, which can sometimes override your manual settings. Modifying these involves sensitive security protocols that community moderators cannot bypass.

Only Microsoft backend support or your subscription reseller has the authorization to handle these complex identity investigations and temporarily disable MFA.

Sign in to the Admin Center

Navigate to the Microsoft 365 admin center and log in using your Global Administrator credentials.

Access the Help module

On the left-hand navigation menu, click on 'Show all', select 'Support', and then choose 'Help & support'.

Create a service request

Detail your issue, explicitly stating that unwanted MFA prompts persist despite disabling Security Defaults, and submit the request so Microsoft can investigate your tenant's backend policies.

Open a Service Request with Microsoft Support

Subscriptions managed by resellers: If your subscription was purchased through a Microsoft partner or reseller, you must contact their specific support channels instead of Microsoft direct support.

Solution 2

Review Conditional Access and Identity Protection

Advanced security configurations in Microsoft Entra ID (Azure AD) might be actively triggering the MFA prompts.

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Frequently Asked Questions

Why do I still get MFA prompts after disabling security defaults?

Microsoft 365 incorporates built-in security processes, Conditional Access rules, and Identity Protection policies that can enforce multifactor authentication even when per-user MFA and broad security defaults are turned off.

Can Microsoft community moderators disable my MFA prompts?

No. MFA configurations are sensitive security matters. Community moderators do not have the backend access required to modify your tenant's security settings; you must open a formal service request.

What should I do if my Microsoft 365 subscription was bought through a partner?

If your Microsoft 365 subscription is managed by a reseller or partner, you must contact their dedicated support team for assistance with adjusting tenant authentication policies.

Microsoft Office Security Issues