Office 365 Calendar via OAuth 2.0 connection troubleshooting

This article describes potential issues with Office 365 Calendar via OAuth 2.0 integration and how these issues can be fixed. If you’re still having problems, please contact us and we will be happy to assist you.

Busy time in Office 365 Calendar is not blocking my availability in ScheduleOnce

If busy time is not blocking your availability, you can check the following settings:

New bookings are not added to my Office 365 Calendar

  1. Go to ScheduleOnce and select Setup -> relevant Booking page -> Associated calendars.
  2. Make sure your calendar is marked as the Main booking calendar or an Additional booking calendar.
    Learn more about the Associated calendars section

I cannot see my scheduled meeting in my Office 365 Calendar

In your Office 365 Calendar, make sure that you've selected the calendar that your meeting was scheduled in. Find it in the calendar list in the left bar and click it to select it. 

In ScheduleOnce, you can also select the activity in the Activity stream, then click the action menu (three dots) in the right-hand pane and select View Calendar event (Figure 1).

Figure 1: View Calendar event

I cannot connect. What should I do?

This may be due to temporary communication problems with the Office 365 API. Please try the following:

  1. Make sure cookies are enabled on your browser
  2. Verify that you can log in to your Office 365 account
  3. Try to connect again from ScheduleOnce

If you are still seeing issues, please contact us and we'd be glad to assist. Please also check with your Office 365 admin to ensure that your Office 365 user has access to the Office 365 API.

I cannot accept bookings in ScheduleOnce

This issue might be caused by Office 365 token expiration. The Office 365 token might expire for one of the following reasons:

  • You updated the Office 365 password in your Office 365 account.
  • The Office 365 token expired automatically after 90 days.
  • Your Office 365 administrator has revoked the OnceHub access to your Office 365 account.
  • Your Office 365 administrator has changed the security settings for your Office 365 account.

In all cases, OnceHub access to your Office 365 Calendar via OAuth has been revoked and you must renew your connection. Go to ScheduleOnce, open the left sidebar, select Integrations-> Calendar integration, and click the Renew your connection button.

NoteYou can also connect to your Office 365 Calendar via EWS.

Other issues 

Contact OnceHub support if you experience other issues.

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