There is a deep link that doesn't work in New Teams.

Question

New Teams (24091.214.2846.1452)is trying to invoke deep links in the browser, but some deep links are not working properly.

but, the deep link worked fine on the old version(1.7.00.8601) of Teams.

What Parameters should change?

normal operation DeepLink
 - https://teams.cloud.microsoft/l/entity/(appID)~~~
 - https://teams.microsoft.com/l/chat

doesn't work 
 - https://teams.cloud.microsoft/l/stage/(appID)~~~
 - https://teams.microsoft.com/l/task/(appID)/~~~

https://learn.microsoft.com/en-us/microsoftteams/platform/concepts/build-and-test/deep-link-application?tabs=teamsjs-v1#share-deep-link-for-a-tab,

https://learn.microsoft.com/en-us/microsoftteams/platform/tabs/tabs-link-unfurling?view=msteams-client-js-latest

With this instruction, only the old version of Teams works fine.

Does New Teams not apply yet?

Answer 1

1. Check the Generation of Deep Links: Ensure that the deep links are generated correctly without errors. The new version of Teams may not accept the External App ID for deep links anymore. Legacy Teams accepted both the External App ID and the Internal App ID, but the new Teams only accepts the Internal App ID1.
2. Update the Deep Link Parameters: If you have multiple clients installing the same app, you now need to have them retrieve the Internal App ID assigned when installed and have a unique deep link for each client1.
3. Troubleshooting Steps: You can try signing out of Teams and signing back in, updating MS Teams to the latest version, uninstalling Teams from your device, then reinstalling it, or clearing the Teams cache from your device2