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Authentication Troubleshooting

This guide covers common authentication errors and their solutions.

Missing Service Principal in the Tenant

This error occurs when the application has a single-tenant Azure Bot Service (msaAppType: 'SingleTenant') instance, but your app registration has not yet been linked to a Service Principal in the tenant.

Error Examples

[ERROR] @teams/app Request failed with status code 401
[ERROR] @teams/app /aaaabbbb-0000-cccc-1111-dddd2222eeee/oauth2/v2.0/token
[ERROR] @teams/app {
[ERROR] @teams/app   "error": "invalid_client",
[ERROR] @teams/app   "error_description": "AADSTS7000229: The client application 00001111-aaaa-2222-bbbb-3333cccc4444 is missing service principal in the tenant aaaabbbb-0000-cccc-1111-dddd2222eeee. See instructions here: https://go.microsoft.com/fwlink/?linkid=2225119 Trace ID: 0000aaaa-11bb-cccc-dd22-eeeeee333333 Correlation ID: aaaa0000-bb11-2222-33cc-444444dddddd Timestamp: 2025-09-18 01:17:37Z",
[ERROR] @teams/app   "error_codes": [
[ERROR] @teams/app     7000229
[ERROR] @teams/app   ],
[ERROR] @teams/app   "timestamp": "2025-09-18 01:17:37Z",
[ERROR] @teams/app   "trace_id": "0000aaaa-11bb-cccc-dd22-eeeeee333333",
[ERROR] @teams/app   "correlation_id": "aaaa0000-bb11-2222-33cc-444444dddddd",
[ERROR] @teams/app   "error_uri": "https://login.microsoftonline.com/error?code=7000229"
[ERROR] @teams/app }

Solution

  1. Sign in to Azure Portal Go to https://portal.azure.com and log in with your Azure account.

  2. Navigate to App Registrations In the top search bar, search for App registrations and select it.

  3. Search for your application Use the BOT_ID from your environment file:

    • Local development → env/.env.local
    • Azure deployment → env/.env.dev

  4. Check if a Service Principal exists Open the app registration and verify if a Service Principal is created. If it exists already, you should see an entry for a Managed Application in your local directory.

    alt-text for existing-service-principal.png

  5. Create a Service Principal if missing If it doesn't exist, click Create Service Principal. Wait for the page to finish loading.

    alt-text for create-service-principal.png

  6. Restart your app Once the Service Principal is created, restart your application.

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