MFA & Verification Issues

Fix Microsoft Authenticator Setup Loop for Microsoft 365 Administrator

Maira Mehtab Sep 28, 2026 869 views

Question details

A Microsoft 365 administrator is unable to configure Microsoft Authenticator due to being trapped in an 'Action Required' sign-in loop.

Product: Microsoft 365
Device & OS: not provided
Scenario: Attempting to configure Microsoft Authenticator for an administrator account.
Observed behavior: The administrator gets stuck in an 'Action Required' sign-in loop, and standard troubleshooting like password changes or clearing browser data does not resolve it.

Before you start

Before proceeding, determine if your Microsoft 365 organization has another active administrator account, as this will dictate your recovery path.

Solution 1Recommended

Reset Authentication Methods via Another Administrator

Use this method if your organization has more than one Microsoft 365 administrator with necessary privileges.

If you are locked in an authentication loop, a secondary administrator can reset your MFA settings from the backend, forcing the system to let you register a new device properly.

Contact a Secondary Admin

Reach out to another global administrator or privileged authentication administrator within your organization.

Access Entra Admin Center

Ask the secondary administrator to sign in to the Microsoft Entra admin center.

Locate Your Account

Navigate to the 'Users' section, search for your administrator account, and click on it to open your profile.

Require Re-register MFA

Select 'Authentication methods' from the left menu and choose 'Require re-register MFA' to reset your Microsoft Authenticator setup.

Solution 2

Contact Microsoft Data Protection Support

Use this method if you are the sole administrator for your Microsoft 365 tenant and are entirely locked out.

Free Microsoft Office alternative

Experience a Seamless and Lightweight Office Suite with WPS Office

While resolving administrator access issues in Microsoft 365, consider exploring WPS Office as a lightweight, secure, and free alternative for your daily document productivity. It offers robust capabilities without complex administrator configurations.

1. Download the Installer: Visit the official WPS Office website and download the free version for your operating system.
2. Install WPS Office: Run the setup file and follow the quick on-screen instructions to install the suite.
3. Edit Seamlessly: Open your existing .docx, .xlsx, or .pptx files directly and start working without needing an administrator login.

Highly compatible with Microsoft Office formats (Word, Excel, PowerPoint).No complex tenant administration or mandatory MFA loops for local document editing.Lightweight design ensuring fast startup and smooth operation.Familiar user interface requiring zero learning curve for seamless migration.

Frequently Asked Questions

Why am I stuck in an Action Required loop during Microsoft Authenticator setup?

This loop typically occurs when there is a glitch in the authentication token, or when a conditional access policy in Microsoft Entra ID conflicts with your current device registration state.

Will clearing my browser cache fix the MFA setup loop?

Usually, it does not. While basic browser troubleshooting is recommended, if your account's MFA registration state is corrupted in the Microsoft Entra admin center, a server-side reset is required.

How long does it take for Microsoft Data Protection to unlock a sole admin account?

Due to strict security and verification protocols, recovering a sole administrator account through the Data Protection team can take several days to ensure unauthorized users are not attempting a tenant takeover.

How can I prevent being locked out as a sole administrator in the future?

Microsoft highly recommends creating an emergency access 'break-glass' account. This is a highly secure account excluded from standard MFA policies to ensure you always have a backdoor to your tenant during a lockout.

Login & Account Issues