> ## Documentation Index
> Fetch the complete documentation index at: https://helpdocs.getthread.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Cloning a Legacy Teams App

> Clone a legacy Microsoft Teams app in Thread to duplicate its settings and migrate off MultiTenant before Microsoft's March 2026 deprecation deadline.

Cloning a Teams app allows you to quickly create a new app with the same configuration as an existing one. This is useful when you want to reuse settings, tokens, or behavior from a legacy app without rebuilding it from scratch.

## Why clone a Teams app?

Microsoft has deprecated **MultiTenant** support for Teams apps. This means all legacy MultiTenant apps must be rebuilt by **March 2026**. Cloning your existing Teams app in Thread is the easiest way to migrate — all settings and configurations are automatically carried over, keeping your setup consistent while ensuring compliance with Microsoft’s new requirements.

## Steps

<Steps>
  <Step title="Navigate to the Teams Apps section">
    In the Thread Admin panel, go to **Messenger → Teams Apps**.
  </Step>

  <Step title="Duplicate the app">
    Find the app you’d like to clone. Click the **Duplicate** button on the right-hand side.
  </Step>

  <Step title="Confirm and create">
    In the top-right corner, click **Next**, then select **Create**.
  </Step>

  <Step title="Done!">
    A new app will be created with all the same settings as your original one.
  </Step>
</Steps>

## After cloning

Once your new app has been created, you can **deploy it** to your customers right away. We recommend deploying the new version to all existing legacy app users **before March 2026** to ensure a smooth transition ahead of Microsoft’s MultiTenant deprecation.

**Best practices:**

* Remove the **“(duplicate)”** tag from the name of your new app before deployment.
* Rename your legacy app to include **“(old)”** in its title to help differentiate between the two.


## Related topics

- [How to Upgrade your Legacy Teams App](/messenger/how-to-upgrade-your-legacy-teams-app.md)
- [Webroot Legacy AV](/skill-library/vendor-runbooks/webroot-legacy-av.md)
- [Conditional Access Review](/skill-library/m365-administration/conditional-access-review.md)