Fix Microsoft 365 Groups Calendar Not Showing Free/Busy Blocks
Question details
Users cannot see free/busy time blocks in the Scheduling Assistant for events created directly in a Microsoft 365 Group calendar.
- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- Checking team availability using the Scheduling Assistant in Microsoft 365.
- Observed behavior
- Events saved to the Group calendar do not display free or busy status for members, unlike shared mailboxes or public folders.
Verify that you have Exchange admin permissions if you plan to set up a shared mailbox as an alternative to Microsoft 365 Groups.
Use a Shared Mailbox Calendar
Since the lack of free/busy visibility is by design in M365 Groups, using a shared mailbox is the best alternative for team scheduling.
Microsoft 365 Groups are designed differently from traditional shared mailboxes. Currently, group calendars do not sync free/busy data to the Scheduling Assistant by default. Switching to a shared mailbox restores this functionality.
Open the Microsoft 365 admin center and navigate to Teams & groups > Shared mailboxes.
Click 'Add a shared mailbox', enter a recognizable name and email address for your team, and save the changes.
Select the newly created mailbox and add the necessary team members so they can access its calendar.
Instruct your team to use this shared calendar instead of the Group calendar for events where free/busy visibility is required.
Invite Attendees Directly to Group Events
If you must use the Group calendar, invite members directly to ensure the event blocks their personal calendar.
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Frequently Asked Questions
Why doesn't the Microsoft 365 Group calendar show free/busy times?
This is a by-design limitation of Microsoft 365 Groups. Unlike traditional shared mailboxes, group calendars do not currently broadcast free/busy data to the Scheduling Assistant for individual members.
Can I change a setting to enable free/busy blocks for M365 Groups?
No, there is no built-in admin or user setting to toggle this feature for Microsoft 365 Groups. You must either invite members directly to the event or transition to using a shared mailbox calendar.
How can I request this feature from Microsoft?
You can submit a feature request or vote on existing requests regarding Group calendar free/busy visibility through the official Microsoft Feedback Portal.
