csharp

page_type	description	products	languages	extensions	urlFragment
sample	Add this sample app to enable anonymous user participation and interaction in Microsoft Teams meetings.	office-teams office office-365	csharp	contentType createdDate samples 08-02-2023 10:00:01	officedev-microsoft-teams-samples-app-anonymous-users-csharp

Anonymous User Support in Microsoft Teams Apps

This sample demonstrates how to enable anonymous user support in Microsoft Teams meeting apps. It provides guidance on configuring and integrating various Microsoft services, like Azure Active Directory (AAD) and the Microsoft Bot Framework, to allow guest users to interact with meeting apps seamlessly.

Interaction with app

Prerequisites

• .NET Core SDK version 6.0

  determine dotnet version

  dotnet --version

• dev tunnel or ngrok latest version or equivalent tunnelling solution.

• Teams Microsoft Teams is installed and you have an account

Setup

Note these instructions are for running the sample on your local machine.

1. Run ngrok - point to port 3978

   ngrok http 3978 --host-header="localhost:3978"

   Alternatively, you can also use the dev tunnels. Please follow Create and host a dev tunnel and host the tunnel with anonymous user access command as shown below:

   devtunnel host -p 3978 --allow-anonymous

2. Setup

Register you app with Azure AD.

1. Register a new application in the Microsoft Entra ID – App Registrations portal.
2. Select New Registration and on the register an application page, set following values:
   • Set name to your app name.
   • Choose the supported account types (any account type will work)
   • Leave Redirect URI empty.
   • Choose Register.
3. On the overview page, copy and save the Application (client) ID, Directory (tenant) ID. You’ll need those later when updating your Teams application manifest and in the appsettings.json.
4. Under Manage, select Expose an API.
5. Select the Set link to generate the Application ID URI in the form of api://{base-url}/botid-{AppID}. Insert your fully qualified domain name (with a forward slash "/" appended to the end) between the double forward slashes and the GUID. The entire ID should have the form of: api://fully-qualified-domain-name/botid-{AppID}
   • ex: api://%ngrokDomain%.ngrok-free.app/botid-00000000-0000-0000-0000-000000000000.
6. Select the Add a scope button. In the panel that opens, enter access_as_user as the Scope name.
7. Set Who can consent? to Admins and users
8. Fill in the fields for configuring the admin and user consent prompts with values that are appropriate for the access_as_user scope:
   • Admin consent title: Teams can access the user’s profile.
   • Admin consent description: Allows Teams to call the app’s web APIs as the current user.
   • User consent title: Teams can access the user profile and make requests on the user's behalf.
   • User consent description: Enable Teams to call this app’s APIs with the same rights as the user.
9. Ensure that State is set to Enabled
10. Select Add scope
    • The domain part of the Scope name displayed just below the text field should automatically match the Application ID URI set in the previous step, with /access_as_user appended to the end:
      • `api://[ngrokDomain].ngrok-free.app/botid-00000000-0000-0000-0000-000000000000/access_as_user.
11. In the Authorized client applications section, identify the applications that you want to authorize for your app’s web application. Each of the following IDs needs to be entered:
    • 1fec8e78-bce4-4aaf-ab1b-5451cc387264 (Teams mobile/desktop application)
    • 5e3ce6c0-2b1f-4285-8d4b-75ee78787346 (Teams web application)
12. Navigate to API Permissions, and make sure to add the follow permissions:

• Select Add a permission
• Select Microsoft Graph -> Delegated permissions.
  • User.Read (enabled by default)
• Click on Add permissions. Please make sure to grant the admin consent for the required permissions.

13. Navigate to Authentication If an app hasn't been granted IT admin consent, users will have to provide consent the first time they use an app.

• Set a redirect URI:
  • Select Add a platform.
  • Select Single-page application.
  • Enter the redirect URI for the app in the following format: https://{Base_Url}/auth-end and https://{Base_Url}/auth-start.

14. Navigate to the Certificates & secrets. In the Client secrets section, click on "+ New client secret". Add a description(Name of the secret) for the secret and select “Never” for Expires. Click "Add". Once the client secret is created, copy its value, it need to be placed in the appsettings.json.

15. Create a Bot Registration - Register a bot with Azure Bot Service, following the instructions here. - Ensure that you've enabled the Teams Channel - While registering the bot, use https://<your_tunnel_domain>/api/messages as the messaging endpoint.

16. To test facebook auth flow create a facebookapp and get client id and secret for facebook app. Now go to your bot channel registartion -> configuration -> Add OAuth connection string

• Provide connection Name : for eg facebookconnection. You'll use this name in your bot in the appsettings.json file.
• Select service provider ad facebook
• Add clientid and secret of your facebook app that was created using Step 16.

3. Clone the repository

   git clone https://github.com/OfficeDev/Microsoft-Teams-Samples.git

4. Run the app from a terminal or from Visual Studio, choose option A or B.

   A) From a terminal, navigate to samples/app-anonymous-users/csharp

   # run the app
   dotnet run

   B) Or from Visual Studio

   • Launch Visual Studio
   • File -> Open -> Project/Solution
   • Navigate to samples/app-anonymous-users/csharp folder
   • Select AnonymousUsers.sln file
   • Press F5 to run the project

5. In a terminal, navigate to samples/app-anonymous-users/csharp/ClientApp

   • Inside ClientApp folder execute the below command.

     # npm install

6. Modify the /appsettings.json and fill in the following details: Modify the appsettings.json and fill in the following details:

• {{Microsoft-App-id}} - Generated from Step 1 (Application (client) ID)is the application app id
• {{TenantId}} - Generated from Step 1(Directory (tenant) ID) is the tenant id
• {{MicrosoftAppPassword}} - Generated from Step 1.14, also referred to as Client secret
• {{domain-name}} - Your application's base url. E.g. https://12345.ngrok-free.app if you are using ngrok and if you are using dev tunnels, your URL will be like: https://12345.devtunnels.ms.
• {{FacebookAppId}} and {{FacebookAppPassword}}- Generated from step 16.

7. Modify the .env file in your project folder (or in Visual Studio) and fill in below details:

• {{Microsoft-App-id}} - Generated from Step 1 (Application (client) ID)is the application app id
• {{FacebookAppId}}- Generated from step 16.

7. This step is specific to Teams.

• Edit the manifest.json contained in the AppManifest folder to replace your Microsoft App Id <<YOUR-MICROSOFT-APP-ID>> (that was created when you registered your bot earlier) everywhere you see the place holder string <<YOUR-MICROSOFT-APP-ID>> (depending on the scenario the Microsoft App Id may occur multiple times in the manifest.json)

• Edit the manifest.json for {{domain-name}} with base Url domain. E.g. if you are using ngrok it would be https://1234.ngrok-free.app then your domain-name will be 1234.ngrok-free.app and if you are using dev tunnels then your domain will be like: 12345.devtunnels.ms.

• Zip up the contents of the AppManifest folder to create a manifest.zip (Make sure that zip file does not contains any subfolder otherwise you will get error while uploading your .zip package)

• Upload the manifest.zip to Teams (In Teams Apps/Manage your apps click "Upload an app". Browse to and Open the .zip file. At the next dialog, click the Add button.)

• Add the app to team/groupChat scope (Supported scopes).

Note:

• If you are facing any issue in your app, please uncomment this line and put your debugger for local debug.

Running the sample

You can interact with Teams Tab meeting sidepanel.

Install app:

Add to a meeting:

Select meeting:

Add app in a meeting tab:

Select vote:

Vote UI:

Submit vote:

Select CreateConversation:

All message have been send and user count:

Send user conversation mmessage:

Click the "Share Invite" button, copy the URL, open the URL in a new tab, and set up a guest account:

Accept guest user:

CreateConversation guest user:

Add app:

Share to stage view:

Click share to stage view:

Screen visible anonymous users:

Click sign-in button

Click sign-in button anonymous users:

Anonymous user success page:

Click submit vote button:

Anonymous user showing the count:

Click submit vote button anonymous users:

User showing the count:

Anonymous user showing the count:

Remove guest user:

Confirm message:

The anonymous user was removed from team:

Remove tenant user:

The tenant user was removed from team:

Add users:

Welcome to the team:

Further reading

• Build apps for anonymous users
• Authentication basics
• Create facebook app for development