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Fix Microsoft Bookings with Me Validation Code Required for Guests

Partner Editor Sep 28, 2026 869 views

Question details

Users need to bypass or manage the email validation code required when booking an appointment for an external guest using Microsoft Bookings with Me.

Fix Microsoft Bookings with Me Validation Code Required for Guests

Product: Microsoft Bookings
Device & OS: not provided
Scenario: Booking an appointment for a guest who has limited access to email or struggles to find the validation code field.
Observed behavior: The system pauses the booking process and demands an email validation code to be entered before completing the guest appointment.

Before you start

Verify whether you are initiating the booking from the Outlook desktop application or the Bookings website, as available verification options may differ slightly between platforms.

Solution 1Recommended

Use SMS Phone Verification as an Alternative

Switch the verification method from email to SMS if your organization's Bookings configuration allows phone verification.

Microsoft Bookings allows phone verification in certain setups to make it easier for guests without immediate email access to verify their identity.

Check Booking Options

Open your Bookings with Me page or the Outlook booking portal.

Select Phone Verification

During the guest checkout or booking configuration, look for the 'Phone verification' or 'Send code via SMS' option.

Enter the SMS Code

Ask the client for the code they receive via text message and input it into the verification field to complete the appointment booking.

Use SMS Phone Verification as an Alternative

Feature Availability: SMS verification availability depends on your Microsoft 365 tenant settings and licensing. If you do not see it, contact your IT administrator.

Solution 2

Coordinate Live Email Verification

Coordinate with the guest in real-time to retrieve the email validation code while you finalize the booking.

Solution 3

Seek Administrative Support

Consult the Microsoft Bookings Community or your IT administrator for tenant-level policy adjustments.

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Frequently Asked Questions

Why does Bookings with Me require an email validation code?

Microsoft enforces this validation code requirement to prevent spam bots from booking fake appointments, ensuring that the guest's contact information is accurate and secure.

Can I completely turn off the validation code for guests in Bookings with Me?

Currently, the validation code is often a strict requirement enforced by Microsoft for external guests. However, tenant administrators can sometimes adjust external sharing policies in the Microsoft 365 Admin Center to alter authentication behaviors.

Where does the guest enter the validation code?

The guest, or the person booking on their behalf, must enter the validation code in the pop-up prompt that appears on the Bookings webpage immediately after submitting the appointment request form.

What if the guest does not receive the email code?

Ask the guest to check their spam or junk email folders. If it is still missing, try refreshing the booking page to request a new code, or use SMS phone verification if it is enabled in your configuration.

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