Custom Teams App not loading under macOS

Occasional Visitor



we are developing an app for microsoft teams where we have a new tab in meetings. But we are struggling to get it working under macOS. When we upload our custom app and add it to a meeting, nothing shows up and according to the tcp dump the connection to our app is refused due to an unknown certificate. The app works fine under windows and is reachable in the browser.


We have a custom domain thats pointing to a reverse proxy that is forwarding to our company on-prem k8s.


Do you have any idea how to fix this problem? Has anyone encounterd something similiar? Any ideas how to investigate this issue more deeply?


Any help is welcomed.


Best regards

1 Reply

@besch415 - Could you please share the error logs for your issue.
Also could you please let us know whether you have tested in Teams browser client or Desktop client on macOS machine.


Chetan Sharma


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