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While in the Teams 'Chat' tab on my Mac, I tapped on some "Copilot" button that was showing at the top of the window that I hadn't seen before. I was immediately taken to the 'Apps' tab, and a modal overlay displays saying "This app cannot be found." I'm fairly certain our company doesn't provide us access to Copilot, and that's why it doesn't show up in available apps anywhere, so I don't know why the button was showing in the 'Chat' tab in the first place if that is the case. But now, any time I try to return to the 'Chat' tab, I get redirected to the Apps tab with the "This app cannot be found" error.
I've tried simply exiting and reopening the app. I've tried uninstalling and reinstalling. I've tried uninstalling, then deleting all the Teams-related folders I could find in "/Library/Microsoft/" and "/Library/Caches", then rebooting my computer and then reinstalling, and still every time I try to access the Chat tab on this device, I get the same modal overlay displaying "This app cannot be found."
I can still access 'Chat' fine on other devices, and haven't seen that Copilot button that started this mess anywhere else on my other devices.
Additional chat-related features and issues within Microsoft Teams for business
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Right clicking on the "Chat" tab in the left menu and selecting "New Chat" fixed it for me.
Dear Richard Whitner,
Good morning! Thank you for posting in the Microsoft Community. We will be happy to help you.
I'm sorry to hear that you're experiencing this issue. It sounds like the Copilot app may have caused some disruption to your Teams app; there is a new update in Copilot for Microsoft 365 related to chat as in What’s New in Copilot | May 2024 - Microsoft Community Hub.
Have you tried right clicking on the "Chat" tab in the left menu and selecting "New Chat", this has helped many users experiencing the same issue. If the issue persists after this, you can try uninstalling and reinstalling Teams again.
Let me know how it goes so we may explore more options. Please understand that our initial response may not always resolve the issue right away. However, with your help and more detailed information, we can work together to find a solution. Thank you for your help.
Dear Richard Whitner,
Good morning! Thank you for posting in the Microsoft Community. We will be happy to help you.
I'm sorry to hear that you're experiencing this issue. It sounds like the Copilot app may have caused some disruption to your Teams app; there is a new updates in Copilot for Microsoft 365 related to chat as in What’s New in Copilot | May 2024 - Microsoft Community Hub.
To troubleshoot this issue, have you tried quitting Microsoft Teams > Open Finder and click on "Go" in the top menu bar > Hold down the "Option" key and click on "Library" > Navigate to the "Containers" folder and find the "com.microsoft.teams" folder > Delete the "com.microsoft.teams" folder > Restart your Mac > Open Microsoft Teams and try accessing the Chat tab again.
If the issue persists after this, you can try uninstalling and reinstalling Teams again. Let me know how it goes so we may explore more options.
Please understand that our initial response may not always resolve the issue right away. However, with your help and more detailed information, we can work together to find a solution. Thank you for your help.
I am having the very same issue. It's very frustrating. The reply by De Paul was unhelpful because the remedies included ALL of the attempts Richard made to fix the issue. This causes a significant interruption in my work.
Has this been fixed? I'm having the same issue
THANK YOU, Man!