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Fix Microsoft Bookings Showing Incorrect Time Slots for Custom Hours

Khadija Khan Oct 16, 2026 869 views

Question details

Users are encountering an issue in Microsoft Bookings where the public booking page displays available time slots that fall outside of the customized service hours.

How to Fix Microsoft Bookings Showing Incorrect Time Slots

Product: Microsoft Bookings
Device & OS: not provided
Scenario: Configuring custom availability and scheduling hours for clients to book appointments on a public calendar page.
Observed behavior: The booking page displays time slots that should not appear based on the service settings, or fails to accurately reflect multiple custom time ranges, often showing availability that extends beyond the intended hours.

Before you start

Ensure you have administrator or scheduling privileges for the Microsoft Bookings calendar so you can access and modify both service and staff availability settings.

Solution 1Recommended

Sync Staff Availability with Custom Service Hours

Fix incorrect time slot displays by ensuring the individual staff member's working hours perfectly align with the custom service availability.

Microsoft Bookings may display unexpected time slots if a staff member's individual availability settings contradict the overall service hours. Resolving this mismatch requires editing the staff profile directly.

Access Staff Settings

Open Microsoft Bookings, navigate to the left-hand menu, and click on 'Staff'.

Edit Staff Member

Select the specific staff member assigned to the problematic service and click 'Edit staff'.

Verify Custom Hours

Check whether 'Use business hours' is enabled. If it is, uncheck it, and manually adjust the staff member's custom hours so they exactly match the availability set for the service.

Save and Test

Click 'Save' to apply the changes, then refresh and test your public booking page to confirm the time slots are now correct.

Sync Staff Availability with Custom Service Hours

Gathering Diagnostic Information: If the time slots are still incorrect after these adjustments, take screenshots of your service settings, staff assignment, and availability configurations to provide to Microsoft support.

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Frequently Asked Questions

Why does Microsoft Bookings show incorrect time slots?

This typically happens when the assigned staff member's individual working hours conflict with the custom service availability, or if there is a mismatch between the time zone settings of the staff and the calendar.

How do I ensure time zones don't affect my Bookings page?

Check the regional and time zone settings both on the general Bookings page level and within the individual staff Microsoft 365 account settings to ensure they are identical.

Can I set different hours for different services in Bookings?

Yes, you can disable the default business hours in the specific service settings and define custom time ranges for when that particular service is available to be booked.

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