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Set up your dev environment for extending Teams apps across Microsoft 365

  • Articolo

The development environment for extending Microsoft Teams apps across Microsoft 365 is similar to Teams development. This article discusses specific configurations required to run preview builds of Teams and Microsoft 365 applications in order to preview Teams apps running in Outlook and Microsoft 365 app.

To set up your development environment:

Prepare a Developer Tenant for testing

You need a Microsoft 365 developer subscription sandbox tenant to set up your dev environment. If you don't already have one, create a sandbox tenant or get a test tenant through your organization.

Note

As you set up for testing, ensure that you sign out of all other accounts and sign in with the account you intend to use for testing.

You also need to enable custom app upload for your tenant:

  1. Sign in to Teams admin center with your test tenant credentials.

  2. Go to Teams apps > Manage apps.

  3. In the upper-right corner of the Manage apps page, select Actions dropdown menu > Org-wide app settings.

  4. Under Custom apps, turn on the Let users interact with custom apps in preview toggle and select Save.

    Screenshot shows how to enable custom app upload option from Teams admin center.

    Apart from Org-wide app settings, custom app policy settings also allow users to upload custom apps to Teams. For more information, see manage custom app policies and settings.

  5. Go to Teams apps > Setup policies and select Global (Org-wide default) policy.

  6. Turn on Upload custom apps and select Save.

Enroll your developer tenant for Microsoft 365 Targeted Releases (Optional)

Note

It can take up to five days after creating a Microsoft 365 developer sandbox tenant and enrolling in Microsoft 365 Targeted Releases for uploaded Teams apps to appear in Outlook and Microsoft 365 app.

This section is optional and only required for any features in preview, as listed in Teams apps across Microsoft 365 app element support table. To enroll your test tenant for Microsoft 365 Targeted Releases:

  1. Sign in to Microsoft 365 admin center with your test tenant credentials.

  2. Go to Settings > Org Settings > Organization profile.

  3. Select Release preferences.

  4. Select any Targeted Release preference:

    1. Targeted Release for everyone
    2. Targeted Release for select users

    The screenshot is an example that shows the Microsoft 365 admin center 'Release preferences' menu with Targeted Release option selected.

  5. Select Save.

For more information on Microsoft 365 release options, see set up the Standard or Targeted Release options in Microsoft 365 admin center help.

Install Microsoft 365 apps in your test environment

Desktop

Based on the test scenario, you can preview Teams apps running in Outlook on Windows desktop by using a Microsoft 365 Apps update channel for your tenant.

To install Microsoft 365 applications in your test environment:

  1. Sign in to your test environment with your test tenant credentials.

  2. Download and run the Office Deployment Tool.

  3. Select a local folder to store the extracted files.

  4. Go to the local folder and open configuration-Office365-x86.xml (or *x64.xml, depending on your environment) in a text editor. Ensure the Channel value is set according to the scenario you're testing:

    Outlook scenario Update channel
    Teams personal tabs in Outlook Current
    Teams search-based message extensions in Outlook Current
    Outlook Add-ins BetaChannel
    Meeting apps in Outlook Current

  5. Open Command Prompt and go to the local folder path.

  6. Run setup.exe /configure configuration-Office365-x86.xml (or use the *x64.xml file, depending on your setup).

  7. Open Outlook (desktop client) and set up the mail account using your test tenant credentials.

  8. Open File > Office Account > About Outlook to confirm you're running a Microsoft 365 Current Channel build of Outlook.

  9. Verify that Microsoft Edge WebView2 Runtime is installed. Open Windows Start > Apps & features, and search for webview:

    The screenshot shows the search field in your Windows settings.

    If it's not listed, install Microsoft Edge WebView2 to your test environment.

Mobile

Android

Install the Microsoft 365 app to preview your Teams personal tab app running on your physical Android device or Android emulator:

  1. Ensure you're using a Google Play supported Android device.

  2. Launch the Play Store on your Android device.

  3. Search for a supported host for running Teams apps:

    1. For Microsoft 365 app (formerly Office), search office and select Microsoft 365 app.
    2. For Outlook, search outlook and select Microsoft Outlook.

  4. Select the Install button.

    The screenshot is an example that shows the install button for the Office (Microsoft 365) app in Google Play Store.

  5. Launch the Microsoft 365 app and sign in with your test tenant credentials.

  6. Open your profile (Me) > Settings and scroll to the bottom of the menu.

  7. Ensure that you use Microsoft 365 app version 16.0.15726.20000 or later and Outlook app version 4.2247.1 (52247812) or later for Android.

iOS

You can preview Teams personal tabs running in Outlook and Microsoft 365 app for iOS by installing the prerelease version on the TestFlight app on your iOS device.

  1. To access the preview version on TestFlight, reach out to the product group through your CSAM/Account Manager for an Invitation.
  2. Install the TestFlight app from the App Store on your testing device of choice.
  3. Open your email invitation, accept the email invitation, or follow the public link invitation to install the Beta app.
  4. Launch the Outlook app and sign in with your test tenant credentials.
  5. Open your profile (Me) > Settings and scroll to the bottom of the menu.
  6. Ensure that you use Microsoft 365 app version 2.72.23030700 or later and Outlook app version 4.2310.0 (18999702) or later for iOS.

Install Visual Studio Code and Teams Toolkit extension

Optionally, you can use Visual Studio Code to extend Teams apps into Microsoft 365 and Outlook.

The extension Teams Toolkit for Visual Studio Code (v2.10.0 or later) provides commands that can help modify your existing Teams code to be compatible with Outlook and Microsoft 365. For more information, see enable Teams personal tab for Microsoft 365 and Outlook.

Next step

Create or update a Teams app to run across Microsoft 365:

Enable a Teams personal tab for Microsoft 365 and Outlook

Enable a Teams message extension for Outlook

See also

Extend Teams apps across Microsoft 365