Custom calendar not working in Outlook My Booking

Dear @Wendy Payne,

Thank you for your message, and I hope you’re having a great day.

I’ve taken some time to double‑check this behavior on my side using two different organizational accounts, to better understand your scenario. In my tests, I created a booking calendar with a time range from April 9 to April 23, shared the booking link, and then accessed it from a different account as well as in a private/incognito browser window. In both cases, the booking page displayed the configured time slots correctly, and the available dates showed as April 9 – 22, allowing bookings to be made without any issues.

(One small detail that’s worth mentioning, since I’ve seen this consistently as well: the missing last day appears to be related to how Bookings processes the end date internally. Although the UI labels it as “End (inclusive)”, Bookings seems to treat the end date more like a time boundary rather than a full calendar day, especially once time zones are taken into account. As a result, the final day can be excluded even when there are no blocking events, and this behavior shows up consistently across different tenants. A common workaround is to set the end date one day later than the actual last day you want students to book, which allows the intended final date to appear normally.)

Because of that, I’d like to understand your case a bit more clearly. Would you be able to share a screenshot of what you see after opening the booking link, where it only shows availability up to April 7? That would help identify what might be limiting the date range on your side.

In addition, it would be helpful if you could try creating one more booking calendar from scratch (with similar date and time settings) and test that link as well. This can help confirm whether the behavior is tied to a specific booking configuration or if it happens consistently.

Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.  

Thanks again for looking into this, and I hope we can narrow it down together. Wishing you a pleasant rest of the day!

Warm regards, 

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