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How to Fix Microsoft Bookings Custom Availability Hours Not Saving

Ayan Masood Oct 23, 2026 868 views

Question details

The user is unable to save custom availability hours for a scheduling service in Microsoft Bookings.

Fix Microsoft Bookings Custom Availability Hours Not Saving

Product: Microsoft Bookings
Device & OS: not provided
Scenario: Attempting to set specific scheduling days and times (e.g., Wednesday 9:00 a.m. to 1:00 p.m.) for a booking service.
Observed behavior: Custom availability hours fail to save and no error message is displayed, whereas default online scheduling policies save successfully.

Before you start

Ensure you have administrative or appropriate edit permissions for the Bookings calendar you are modifying, and check your internet connection to rule out temporary sync failures.

Solution 1Recommended

Try Alternative Browsers and Toggle Bookings Versions

Resolve browser caching issues or temporary interface bugs by switching environments.

Often, backend saving failures that produce no error messages are tied to browser cache conflicts or temporary glitches in the new Bookings interface. Changing your browser state or reverting to the classic view can bypass these validation errors.

Open an InPrivate window

Open an InPrivate or Incognito window in your current browser, or switch to a completely different web browser (like Edge or Chrome).

Attempt to save custom hours

Log back into Microsoft Bookings, navigate to your service, and attempt to set the custom availability hours again.

Toggle Bookings experience

If it still fails, toggle between the 'New' and 'Classic' Microsoft Bookings experiences using the switch at the top right of the dashboard screen.

Save in alternate version

Try saving your custom hours in the alternate version to see if the interface glitch is bypassed.

Try Alternative Browsers and Toggle Bookings Versions

Check Default Settings: If saving works when selecting 'Use the default online scheduling and availability policy', the issue is specifically isolated to custom time processing.

Solution 2

Create a New Test Service

Determine if the bug is isolated to a specific corrupted service profile.

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Frequently Asked Questions

Why does the default scheduling policy save but custom hours do not?

This usually happens due to a browser caching issue or a temporary bug in the Bookings interface failing to process the specific custom time array. Switching to an InPrivate window or toggling the Bookings version often bypasses this hidden validation error.

Can staff availability settings override my custom service hours?

Yes. If a staff member assigned to the service has their own personal working hours set that conflict with the custom service hours, it can cause booking conflicts or unexpected scheduling behavior. Ensure staff hours align with the service availability.

How do I switch back to the classic Microsoft Bookings view?

In the top right corner of the new Bookings dashboard, locate the toggle switch labeled 'Try the new Bookings' or similar, and turn it off. The page will reload and revert to the classic interface.

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