entra-app-registration

To register an app in Microsoft Entra ID, you need to configure application identifiers, tenant authority, and redirect URIs, then select an OAuth 2.0 flow and implement MSAL token acquisition logic for your specific application type.

Choosing the right OAuth 2.0 flow depends on your app type: authorization code with PKCE for SPAs and mobile apps, authorization code for web apps, client credentials for daemon services, and device code for console applications without a browser.

Configuring Microsoft Graph API permissions involves adding delegated or application permissions to your Entra app registration, defining scopes or roles, and handling admin consent so users or services can securely retrieve tokens.

Acquiring a token with MSAL in a console application requires registering the Entra app, adding the necessary Graph API permissions, granting consent, and implementing the device code or authorization code flow for user-context authentication.

Redirect URI mismatches and consent-required token errors occur when the redirect URI configured in your Entra app registration does not exactly match your application's request, or when necessary API permissions lack proper admin consent.

Yes, you can set up service-to-service authentication using the OAuth 2.0 client credentials flow in Microsoft Entra ID, which allows daemon applications to securely acquire tokens without user context by configuring application permissions.