Microsoft was initially set to automatically upgrade Teams classic users to the new Teams app after March 31, 2024, but it has pushed its end of availability to July 1, 2024.

Microsoft launched a newly designed Teams application for Windows and macOS platforms in October 2023. Microsoft recommended that users switch to the new version of the interface.

4. Allow Teams to reboot before use. You can also switch back to Teams Classic by toggling off New Teams. If you swap to Classic Teams during a call or meeting, you'll be disconnected.