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How to Fix Microsoft Bookings 45-Minute Appointment Intervals Not Working

Maira Mehtab Sep 22, 2026 868 views

Question details

Users are unable to successfully schedule 45-minute appointment intervals in Microsoft Bookings.

Product: Microsoft Bookings
Device & OS: not provided
Scenario: Attempting to configure a booking service with exactly a 45-minute duration and specific scheduling intervals.
Observed behavior: A 45-minute duration unexpectedly produces 30- or 60-minute start times, and adding buffers fails to correct the scheduling interval.

Before you start

Verify your current booking page settings to ensure the default scheduling policy and time increments are explicitly set before proceeding with further troubleshooting.

Solution 1Recommended

Escalate to Microsoft Support via Microsoft 365 Admin Center

Since this is a known behavioral limitation in Microsoft Bookings, engaging support is the most direct path to a resolution.

This interval bug requires backend investigation by Microsoft's engineering team. Standard users cannot submit these tickets directly.

Contact Admin

Reach out to your organization's Microsoft 365 Global Administrator.

Open Admin Center

Have the administrator log into the Microsoft 365 admin center.

Create Support Request

Navigate to the Support section and open a new service request detailing the 45-minute interval bug.

Admin Privileges Required: Only Microsoft 365 global administrators have the authority to open direct service requests with Microsoft Support.

Solution 2

Submit Feedback via the Microsoft Feedback Portal

Report the scheduling behavior to the product team to encourage a permanent fix in future Microsoft 365 updates.

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Frequently Asked Questions

Why does Microsoft Bookings round up to 30 or 60 minutes?

Microsoft Bookings relies on predefined time increments for its scheduling engine. Currently, it often defaults to standard half-hour or hourly blocks, improperly overriding custom 45-minute durations.

Can I use buffer times to force a 45-minute interval in Bookings?

No, adding buffer times does not change the core scheduling interval. Users consistently report that 45-minute durations with buffers still result in standard 30- or 60-minute start times.

Is there a workaround for the 45-minute appointment interval issue?

Currently, there is no built-in workaround that natively forces exactly 45-minute intervals. Administrators must report this bug to Microsoft Support for a potential backend resolution.

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