Unable to Join Teams Meetings via Window desktop App

Question

Unable to Join Teams Meetings via Window desktop App

SHC 20

When invited attendees click “Join” in the Teams app, they are unable to enter the meeting.

On my side as the organizer, their status appears as “No response,” and I do not receive any lobby notifications to admit them.

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Answer 1

Aetherin 2,505 Independent Advisor

Hi @SHC,

The "No response" status only reflects the RSVP status of the meeting invitation, meaning the attendee has not responded with Accept, Tentative, or Decline. It does not indicate whether they have clicked Join or are currently waiting in the meeting lobby.

As the organizer, you would only receive a notification after an attendee has successfully submitted a request to join and entered the lobby. If you do not receive any lobby notifications and do not see them in the lobby participant list, it is possible that the affected attendees are not getting past the pre-join stage, rather than their admission request being missed by the organizer. Teams only displays participants after they have successfully reached the lobby.

In addition, if the meeting has multiple organizers, co-organizers, or presenters who have permission to manage the lobby, any of them may receive and act on the lobby request. If your meeting includes other users with these roles, it may also be worth checking whether someone else inadvertently denied the attendee's request to join.

In the meantime, could you please help clarify the following?

If both the organizer and the attendee use Teams on the web, does the meeting join process work as expected?
When the affected attendees click Join, do they see any message such as "Waiting for someone to let you in", or do they encounter a different message or error?
Are the affected attendees internal users, external users, or both?
Does the issue affect all invitees, or only specific users?

Thank you for taking the time to provide the information. I look forward to your update, as the additional details will help me gain a clearer understanding of the situation and provide guidance that is more relevant to your specific scenario.

SHC 20 Reputation points

2026-09-29T13:20:41.4333333+00:00
When both the organizer and attendees use Teams on the web, everyone can join the meeting successfully.

In the Teams desktop app, all attendees are affected. After clicking “Join,” they see the message “Waiting for someone to let you in.”

All affected attendees are internal users within our organization.

The same issue occurs even when a different user organizes the meeting.

Please let us know if you need any additional information to investigate this issue.
Aetherin 2,505 Reputation points Independent Advisor

2026-09-30T09:50:37.9833333+00:00

Hi @SHC,

Thank you for your reply.

May I ask whether there are any co-organizers assigned to the affected meeting? If not, could you please try adding another user as a co-organizer and check whether that person is able to see the lobby admission requests and admit attendees who are waiting?

Also, if the meeting organizer signs in with the same account on a different computer and joins the meeting, do they receive notifications when attendees are waiting in the lobby? Does the same behavior occur on the Teams mobile app?
Aetherin 2,505 Reputation points Independent Advisor

2026-10-01T10:50:16.87+00:00

Hi @SHC,

Is there any update from you. If yes, please feel free to let me know.
SHC 20 Reputation points

2026-10-01T10:57:57.8633333+00:00

Hi @Aetherin

Apologies for the delayed response.

I tried repairing and resetting Teams, then tested it again. However, when I try to join a meeting or call another user, I now receive an error saying that Teams cannot connect due to a network issue.

Both features work normally in the Teams mobile app and the web version. The issue occurs only in the Teams desktop app for Windows.

I also tested this on another PC and encountered the same issue.
Aetherin 2,505 Reputation points Independent Advisor

2026-10-01T11:18:59.2266667+00:00

Hi @SHC,

Thank you for the update, and I appreciate you taking the time.

Since the issue persists even after repairing and resetting Teams, and you have now confirmed that the same behavior occurs on multiple Windows PCs while Teams works normally on both the web and mobile clients, this appears to require a deeper investigation than what can be performed through basic troubleshooting.

At this point, I would recommend contacting your Microsoft 365 administrator and asking them to open a support ticket with Microsoft Support. Microsoft support engineers have access to internal diagnostic tools and service-side logs that can help determine why the Teams desktop client is unable to connect, or why meeting organizers are not receiving attendee join requests and therefore cannot approve attendees, while Teams continues to function normally on other clients.

I believe this will be the most effective and quickest path forward, as users and moderators in this community forum do not have access to the administrative permissions, backend diagnostics, or support resources required to investigate issues at this level.

I hope the appropriate support team will be able to identify the root cause and help resolve the issue for you.