No Outlook calendar Teams invitation possible after upgrade to Teams 2.0

Question

Dear all,

we have our own tenant for MS Teams and since the update to Teams 2.0 from 1.0, users of Microsoft Outlook have problems with the Teams Add-in:

1. Problem 1: New invitiations to Teams meetings are not possible. When you create a new calendar entry and click on "Teams Meeting", nothing happens, the usual "Teams block" including a link to the Teams meeting doesn not appear, the decription field of the calendar entry will stay empty.
2. Problem 2: Existing Teams meeting cannot be changed. If you try to change an existing Teams meeting, that has been successfully create before the upgrade to Teams 2.0, e.g. you try to change date/time and click on "Send update", you get the error message "To schedula a Teams meeting, make sure you're signed in to Teams". 

Everyhting elese is wokring for the users, they can start Teams 2.0 (or switch back to 1.0) and use any other function in the Teams client.

We have Exchange OnPrem and no ExchangeHybrid. Under Teams 1.0 everyhting worked fine including Microsoft Outlook. Windows 10 and Office 2016 are on the latest patch level, the Teams Add-in is registered and active in Outlook, we also tried to reinstall Teams, delte the Teams cache, re-register the TeamsAddin-DLL.

Any idea?

Answer 1

Hi @Matthias68

According to your description, can we understand that this issue only happened when you switch to new Teams client?

Could this issue be fixed if you switch the Teams client to 1.0?

I did a test in our environment, but we could not reproduce your issue. When we create Teams meeting in Outlook client, we could still find this meeting details in Teams calendar.

To troubleshoot this issue, we first recommend you try to create Teams meeting via Outlook web client to see if it can be reproduced.

If there is no issue in Outlook web client, Try creating a new Outlook profile: Sometimes, issues with add-ins can be caused by a corrupted Outlook profile. Try creating a new profile and see if the Teams Add-in works correctly in the new profile.

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Answer 2

The Problem still exists, did none of you guys test hybrid scenarios with 2.0/2.1? There are hundreds of domains that still use on premise office 2016 and with the new teams clients there is no working outlook add-in.

Please fix this asap or we can not swap to the new client. When using the new client and trying to create a teams meeting from outlook calender the message: "you need to be logged in" appears and no meeting id is beeing created.

Also please do not blatantly forward everyone to use the webclient to create meetings. An on premise environment does not have your o365 webmai!