Teams Meeting Add-In Crashing Outlook

Question

Teams Meeting Add-In Crashing Outlook

12300314 136

Has anyone had an issue with this lately? Had a couple of users for whom the Teams Meeting Add-In is crashing Outlook. One user Outlook crashes on opening, the other when he tries to create a Teams Meeting.

I've done a fair amount of Googling on this after identifying the issue and trying a few basic fixes but have come up empty. Here's what I've tried so far:

Uninstall Teams, delete the TeamsMeetingAddin folder from AppData and then reinstall
Quick/Online repair of Office
Full reinstall of Office
Outlook.exe /cleanviews
Created a new Outlook profile
Have also tried fixes from the following links

https://learn.microsoft.com/en-us/answers/questions/291072/outlook-keeps-disabling-the-teams-plug-in.html

https://answers.microsoft.com/en-us/msteams/forum/all/outlook-crashes-when-running-teams-add-in/aa30e96c-f912-4934-9845-53ca014ca3e5

https://support.microsoft.com/en-us/topic/outlook-2016-crashes-when-opening-a-teams-meeting-b3e4dcf4-37cf-42ab-eecd-3ebb508a1525

https://endpointfocus.com/outlook-crashes-when-opening-a-teams-meeting-invite/

I've run out of pages on Google with helpful results, none of my colleagues have any additional ideas and I'm currently going through the motions with MS support (who are not being helpful) so thought I'd ask if anyone else has run into this recently and managed to resolve?

Yuki Sun-MSFT 41,376 Reputation points Moderator

2022-05-24T03:24:09.643+00:00

Hi @12300314 ,

One user Outlook crashes on opening, the other when he tries to create a Teams Meeting.

So the issue can be reproduced on the affected users' side, right?
Is there any error message when the crash occurs?
Would you try to collect the detailed version information for both Outlook and Teams application? For Outlook, you can go to File > Office Account > About Outlook. For Teams, please go to the ellipsis (...) menu next to the profile picture and select About > Version.

Besides, I'd suggest having a look at the Event Viewer on the machine when Outlook crashes and see if there's any relevant events recorded out there.
12300314 136 Reputation points

2022-05-24T15:32:44.43+00:00

Sorry for a wholly unhelpful answer to anyone who has searched for an answer to this but it started working again today with no changes made.

I can only think an update to Office/Teams/Windows has resolved this.
Yuki Sun-MSFT 41,376 Reputation points Moderator

2022-05-25T05:59:01.78+00:00

Sorry for a wholly unhelpful answer to anyone who has searched for an answer to this but it started working again today with no changes made.
I can only think an update to Office/Teams/Windows has resolved this.

Hi @12300314 ,

Great to know that it's working now and thanks for the share!
JMos 5 Reputation points

2023-02-26T20:29:46.0966667+00:00

One year later, Feb 2023 and our office is having the same issue. Started out of nowhere. Outlook crashes when accessing the calendar or just randomly. Sometimes with warning via an error code and sometimes without any warning or code. One error message warned of an error with plug-in, which pointed to the Teams add-in. Issue has been ongoing for the past week. We will try uninstalling the Teams add-in or Teams altogether to see if that works.
kingofthewestroam 0 Reputation points

2023-10-26T14:17:30.0866667+00:00

@JMos Any update on this? This seems to be a recurring issue.
mrn042 0 Reputation points

2023-11-16T12:45:30.9033333+00:00

The problem is still there, even reinstalling and deleting the cache/registry does not help.

What else can we do? Please give us quick feedback.

Greetings
AMST 0 Reputation points

2023-11-16T12:49:28.9166667+00:00
The problem is present across the organization (with more than 100 clients). No matter what is done, it does not work.

Teams reinstalled

Teams cache cleared

Deactivated all addins except the Teams addin

Deleted the TeamsMeetingAddin folder and then reinstalled Teams.

The version also doesn't matter, it works for some users and not for others

Removing Shared Calendar

Workaround:

Either use the new Outlook or create the appointments directly in the Teams app

Translated with www.DeepL.com/Translator (free version)

Thanks for help!

1 answer

Your answer

Yuki Sun-MSFT 41,376 Reputation points Moderator

2022-05-24T03:24:09.643+00:00

Hi @12300314 ,

One user Outlook crashes on opening, the other when he tries to create a Teams Meeting.

So the issue can be reproduced on the affected users' side, right?
Is there any error message when the crash occurs?
Would you try to collect the detailed version information for both Outlook and Teams application? For Outlook, you can go to File > Office Account > About Outlook. For Teams, please go to the ellipsis (...) menu next to the profile picture and select About > Version.

Besides, I'd suggest having a look at the Event Viewer on the machine when Outlook crashes and see if there's any relevant events recorded out there.
12300314 136 Reputation points

2022-05-24T15:32:44.43+00:00

Sorry for a wholly unhelpful answer to anyone who has searched for an answer to this but it started working again today with no changes made.

I can only think an update to Office/Teams/Windows has resolved this.
Yuki Sun-MSFT 41,376 Reputation points Moderator

2022-05-25T05:59:01.78+00:00

Sorry for a wholly unhelpful answer to anyone who has searched for an answer to this but it started working again today with no changes made.
I can only think an update to Office/Teams/Windows has resolved this.

Hi @12300314 ,

Great to know that it's working now and thanks for the share!
JMos 5 Reputation points

2023-02-26T20:29:46.0966667+00:00

One year later, Feb 2023 and our office is having the same issue. Started out of nowhere. Outlook crashes when accessing the calendar or just randomly. Sometimes with warning via an error code and sometimes without any warning or code. One error message warned of an error with plug-in, which pointed to the Teams add-in. Issue has been ongoing for the past week. We will try uninstalling the Teams add-in or Teams altogether to see if that works.
kingofthewestroam 0 Reputation points

2023-10-26T14:17:30.0866667+00:00

@JMos Any update on this? This seems to be a recurring issue.
mrn042 0 Reputation points

2023-11-16T12:45:30.9033333+00:00

The problem is still there, even reinstalling and deleting the cache/registry does not help.

What else can we do? Please give us quick feedback.

Greetings
AMST 0 Reputation points

2023-11-16T12:49:28.9166667+00:00

The problem is present across the organization (with more than 100 clients). No matter what is done, it does not work.

Teams reinstalled

Teams cache cleared

Deactivated all addins except the Teams addin

Deleted the TeamsMeetingAddin folder and then reinstalled Teams.

The version also doesn't matter, it works for some users and not for others

Removing Shared Calendar

Workaround:

Either use the new Outlook or create the appointments directly in the Teams app

Translated with www.DeepL.com/Translator (free version)

Thanks for help!

Answer 1

@kingofthewestroam Yes. After painful deep diving, we discovered the culprit of our Outlook Crashing was a shared calendar that was being shared via SharePoint. The shared calendar had become corrupt somehow; possibly by a Microsoft update. By deleting/removing the shared office calendar from Outlook, everything started to function normally again with no freezing or crashing. After the issue was resolved, the Teams add-in for Outlook was missing and we did have to reinstall/turn on the Teams add-in. If you have the same issue, follow these steps for Teams add-in: https://support.microsoft.com/en-us/topic/can-t-create-a-teams-meeting-in-outlook-because-the-teams-meeting-add-in-has-become-disabled-5640438b-e233-4921-9237-5bbfff7f9509

Worst case scenario, uninstall and reinstall Teams, which should reinstall the Outlook Add-In.

Note: Our shared SharePoint calendar could not be resolved or fixed, so we ended up having to create a new SharePoint calendar from scratch, and relink it to outlook. But the new calendar can also be linked to a Teams group, so it is visible in Teams. So it all worked out. We have had no issues after creating and linking the new shared calendar. We suspect the previous shared calendar was created in an older version and was no longer compatible with the current updates to outlook.

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Teams Meeting Add-In Crashing Outlook

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