MFA & Verification Issues

Fix Microsoft 365 Security Verification Requires Additional Information Error

Maira Mehtab Sep 22, 2026 868 views

Question details

The user encounters an identity verification message stating that additional information is required when attempting to set up or purchase Microsoft 365 Business Standard.

Product: Microsoft 365 Business Standard
Device & OS: not provided
Scenario: Setting up a new account or finalizing the purchase for a Microsoft 365 Business Standard subscription.
Observed behavior: An identity verification prompt blocks the setup process, and the error persists even after the user tries to input different phone numbers or email addresses.

Before you start

Ensure you have access to a completely unused alternate phone number and have your official company registration and billing documents ready in case manual verification is needed.

Solution 1Recommended

Use an Alternate Network and Unused Contact Details

Switching your internet connection and using a fresh phone number can bypass automatic security blocks triggered by reused details or flagged IP addresses.

Microsoft's security system actively monitors for phone numbers that have been used multiple times to register Microsoft 365 services. If a number hits the limit, it gets blocked. Furthermore, attempting verification multiple times from the same IP address can cause the network itself to be temporarily flagged.

Switch networks

Disconnect from your current office Wi-Fi or VPN. Connect your device to a completely different network, such as a mobile data hotspot.

Enter a new phone number

On the verification screen, input a phone number that has never been used to register any previous Microsoft 365 or Azure services.

Verify billing information

Double-check that the company name, address, and primary email you are entering match your official financial documentation exactly.

Resubmit the form

Click to submit the verification request again and wait for the confirmation code.

Solution 2

Contact Microsoft Billing or Sales Support

If automated verification systems continue to reject your details, you will need to request a manual override from Microsoft Support.

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3. Start working immediately: Launch WPS Office and instantly open, edit, or create your documents without restrictive identity checks.

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Frequently Asked Questions

Why does Microsoft 365 say my phone number cannot be used for verification?

Microsoft imposes a strict limit on how many times a single phone number can be used to register Microsoft 365 services to prevent spam and fraudulent accounts. If you reach this limit, you must provide a different phone number.

Will using a VPN cause my Microsoft 365 verification to fail?

Yes, connecting through a VPN or proxy can trigger Microsoft's automated security protocols, as the IP address might be shared or flagged for suspicious activity. It is recommended to disable your VPN and use a standard home or mobile network during setup.

How long does it take for Microsoft Support to resolve a blocked setup verification?

Manual identity verification by Microsoft's Billing or Sales support team typically takes 24 to 48 hours once you have submitted your official company registration and billing details to the support agent.

Login & Account Issues