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Teams - Fix 'Classic Teams will soon be unavailable for use' message.

I'm using Teams in my browser, and was getting a warning bar at the top stating that "Classic Teams will soon be unavailable for use" as shown below:

This tutorial will show you how to address this.

Steps

Open the console in your browser (which is probably a case of hitting F12) and clicking the console tab.

Then run the following two commands in the console:

window.localStorage.setItem("tmp.isOptedIntoT2Web", true);
document.location.href = 'https://teams.microsoft.com/v2/';

Teams should refresh and use the new version. Teams should use this version from now on.

References

Last updated: 2nd April 2024
First published: 2nd April 2024