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No longer able to create Teams meetings on shared non-default Outlook calendars

L.M 0 Reputation points
2026-01-09T17:18:13.0066667+00:00

My team and I are experiencing a new bug that started in early 2026 affecting shared calendars in Microsoft 365.

When a user shares a non-default (secondary) calendar with another user using “Can Edit” (Editor) permissions, the recipient cannot create meetings with Microsoft Teams links on that shared calendar.

When attempting to add a Teams meeting, Outlook displays the following when trying to save the event:

“We couldn't make this a Teams meeting
Something went wrong and we couldn't create a Teams meeting link. Do you want to send the invite without the link?”

This worked correctly prior to the 2025 holidays.

Reproduction Steps

  1. User A creates a secondary calendar in Outlook (not the default calendar).
  2. User A shares this secondary calendar with User B and grants Editor (Can Edit) permissions.
  3. User B opens the shared calendar in Outlook (Desktop or OWA).
  4. User B creates a new meeting on the shared calendar.
  5. User B checks Teams Meeting and attempts to send the meeting invite.
  6. Result: Teams link fails to generate with an error (“We couldn't make this a Teams meeting”).

We were however able to find a workaround, pointing to this issue being a permission bug:

  1. User A additionally grants Editor access to their primary (default) calendar.
  2. User B retries creating a Teams meeting on the secondary shared calendar.
  3. Result: Teams link is created successfully.

This workaround is not acceptable long-term, as it requires granting unnecessary access to users’ personal calendars and violates least-privilege principles.

Users with Editor permissions on a shared calendar should be able to create Teams meetings on that calendar without requiring any access to the owner’s primary calendar. This was the observed behavior prior to 2026. Currently, Teams meeting creation fails unless the editor also has write access to the calendar owner’s default calendar, even though the meeting is being created on a different calendar.

Microsoft Teams | Microsoft Teams for education | Calendar | Manage calendars
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  1. Chris Duong 8,655 Reputation points Microsoft External Staff Moderator
    2026-01-09T18:59:52.8833333+00:00

    Hi @L.M, 

    Welcome to the Microsoft Q&A forum.  

    Thank you very much for reaching out regarding the issue you are experiencing with creating Microsoft Teams meetings on shared secondary calendars. 

    I really appreciate the level of detail and clarity in your report. The reproduction steps and the workaround you identified are very thorough and demonstrate a strong technical understanding of how shared calendars and permissions are expected to work in Microsoft 365. This kind of detail is extremely helpful for analysis and escalation. 

    Based on what you described, this behavior may indicate a potential regression that appears to have started in early 2026. Users with Editor (Can Edit) permissions on a non‑default (secondary) shared calendar are currently unable to create Teams meetings in this scenario unless they are also granted Editor access to the calendar owner’s primary (default) calendar. As you correctly noted, this differs from the behavior observed prior to the 2025 holiday period and does not align with least‑privilege access principles. 

    While the workaround helps confirm the root cause area, I agree that it is not suitable as a long‑term solution, as it requires unnecessary access to users’ personal calendars. 

    To ensure this issue is handled appropriately by Microsoft, I recommend the following: 

    1/ Report an Incident in the Microsoft 365 Admin Center 

    This allows Microsoft to track the issue across tenants, involve the relevant engineering teams, and deliver official guidance, mitigations, and, if applicable, a permanent resolution. 

    • Sign in to the Microsoft 365 Admin Center with your Microsoft administrator account. (If you're not an admin, please contact your organization's administrator to submit a request on your behalf.) 
    • Navigate to Health > Service health.  
    • User's image
    • Under the Reported issues tab, select Report an issue.  
    • Complete the form and click Submit.  

    2/ Contact Microsoft Support 

    If this issue is urgent and directly impacting your team’s productivity, I strongly recommend reaching out to your IT department and asking them to open a support ticket with Microsoft Technical Support through the Microsoft 365 Admin Center. They have access to system-level diagnostics and can investigate the problem more thoroughly. At the very least, they can provide the most effective workaround to ensure your experience remains smooth and secure.   

    We kindly ask for your understanding that, as moderators, we do not have access to the administrative tools or permissions required to investigate or modify these configurations. We also do not have the capability to initiate remote sessions for direct assistance. Our role is to guide users to the appropriate resources and support channels.     

    I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, we can work together to resolve this.    

    Thank you again for your time and for raising this important usability concern.    

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have any extra questions about this answer, please click "Comment".  

    Note: Follow the steps in our documentation to enable email notifications if you want to receive email notifications related to this topic.  

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