Teams Calendar External Meeting Invites Not Working

Eric B 21 Reputation points

When a user attempts to join a Teams meeting via the Teams calendar that was sent to them from an external organization it will not connect to the meeting. If the user then tries to connect to the same Team meeting via their Outlook calendar, it works without issue.

Any ideas?

Microsoft Teams
Microsoft Teams
A Microsoft customizable chat-based workspace.
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  1. Henning Lorang 26 Reputation points

    You can't invite external users to channel meeting. Try to invite external Users to a normal meeting.

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  2. Nithin Shankar 36 Reputation points

    Hi @Eric B ,

    If external user cannot join means that either your tenant or admin group doesn't allow it or the above reason that @Henning Lorang mentioned. Even if the issue still occurs for normal meeting also than please contact your org. MS Office Admin team ask to allow external user to join meetings.

    Teams External Users


    Please Accept the answer and vote it, if this solves your issue.

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  3. Sharon Zhao-MSFT 25,126 Reputation points Microsoft Vendor

    @Eric B ,

    Does the meeting information show correctly in Teams calendar?

    Could you provide us a screenshot of the error message if has?

    In general, external user can join the Teams meeting from Teams calendar normally. As NithinShankar-6258 said, you could check the external access settings.

    Besides, you can also try to add the external user as a guest to a team. Then, schedule the meeting again.

    If the response is helpful, please click "Accept Answer" and upvote it.

    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.

  4. Nikola Djuricin 1 Reputation point

    Hi I agree with colleagues and I suggest you look at some other type of meeting instead of channel meeting. See details here.

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  5. Jeanne 1 Reputation point

    @Sharon Zhao-MSFT This is definitely still an open issue. @Eric B @Nikola Djuricin

    Any teams meeting sent from an person outside your organization to you, cannot be joined from teams or outlook. The only way to join is to open the meeting invite and locate the actual meeting link from inside the meeting invite and click "Click here to join meeting" this will then allow the internal recipient to join the meeting.

    Trying to join the meeting through teams clicking the join button from either desktop or web or even join online through outlook will give an error. The latter one trying to access through outlook causes a much worse outcome by hanging your teams session up and it will not resolve via ending in task manager and relaunching teams, until you uninstall the desktop teams app entirely. I have opened a ticket with MS but it continues to be an open issue.

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