Missing "Teams Meeting" toggle in Outlook for macOS calender for one (shared) mailbox

Christian Kelinski 20 Reputation points


I've a very odd problem with creating new meeting invitations. For one shared mailbox, the "Teams Meeting" toggle is missing, for all other it's where it belongs (shared mailboxes as well as my personal mailbox). If I create a new meeting invitation, just switching between the mailboxes on the upper left corner shows or removes the button.

Screenshot for a working mailbox (Teams Besprechung translates to Teams Meeting)


Screenshot for the not working mailbox just after only switch the calendar


macOS Version is 14.0, Outlook Version is 16.78.

The same happens on Outlook Web and as well for all the other colleagues, which have this mailbox connected. It's a new shared mailbox, created just some days before.

For testing purposes, I converted it to a user mailbox and assigned a license and a password to the corresponding user. After Login to this User (via Outlook Web) - same problem.

I compared the output of the Powershell command Get-Mailbox but there was nothing that catched my eye (which does not mean a lot :-) ).

Did someone experienced this problem?

Thanks a lot!


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Accepted answer
  1. LiweiTian-MSFT 14,945 Reputation points Microsoft Vendor

    Hi @Christian Kelinski

    If you're a Microsoft Teams administrator and your users aren't able to install the Teams Meeting add-in for Outlook, schedule Outlook meetings from Teams, or schedule Teams meetings from Outlook, try the following steps to troubleshoot and resolve the issue.

    If you're an administrator, you can use the diagnostic tool to validate that a user has the correct policies to enable the Teams Outlook add-in.

    In the Username or Email field under Run diagnostic, enter the email address of the user who is experiencing issues when they try to enable the Teams Outlook add-in. Then, select Run Tests.

    The tests will return the best next steps to resolve any tenant or policy configuration issues and validate that the user is correctly configured to enable the Teams Outlook add-in.

    You can also try assigning a Teams license to the shared mailbox to see if the issue is resolved.

    In some scenarios, you might not be able to access the meeting options for a meeting that's scheduled by using the shared mailbox. In this case, a workaround is to remove the shared mailbox and then add it again by using the File > Add Account option in Outlook.

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

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  1. Christian Kelinski 20 Reputation points


    I'm using "The new Outlook for Mac" Version of macOS, which doesn't need a Teams Addin. Actual there is no Teams Add In for this Outlook Version.

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  2. Christian Kelinski 20 Reputation points


    the problem sorted itself out. After some days, the Teams Toggle appeared.

    After creating a new Shared Mailbox, I takes about a day until the Button appears (it tried creating two more shared mailboxes), but apart from this, it works as expected.



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