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Guidance needed to update the authentication from basic to modern

Raymond 120 Reputation points
2026-01-28T17:44:09.3433333+00:00

Our service account is currently using 'Basic Authentication' to send emails. We need help updating the authentication method to 'Modern Authentication'

Microsoft Security | Microsoft Entra | Microsoft Entra ID

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  1. VEMULA SRISAI 13,220 Reputation points Microsoft External Staff Moderator
    2026-01-28T20:41:44.75+00:00

    Hello Raymond,

    It looks like you’re trying to switch from Basic Authentication to Modern Authentication for your service account to align with Microsoft’s upcoming deprecation of Basic Authentication after 12/31/2025. Here’s a step-by-step guide to help you make that transition using Microsoft Entra ID, as it is currently the only supported authentication method:

    Steps to Update Authentication to Modern (Microsoft Entra ID)

      1. Access the Azure Portal:
      2. Locate Your Application:
        • From the left-hand menu, select Microsoft Entra ID.
        • Click on App registrations and find your application from the listing.
      3. Configure Authentication:
        • Navigate to the Authentication section.
        • Ensure that you enable Microsoft Entra multifactor authentication by following the on-screen instructions. This step is crucial as Microsoft requires stronger security protocols than Basic Authentication offers.
      4. Set Necessary Permissions:
        • Make sure that all required permissions are granted to your app. This might include permissions such as User.Read.All,
      5. Verify Configuration:
        • After configuring, test the authentication by attempting to sign in to your application. Make sure that multifactor authentication prompts are functioning as expected.

      Common Issues

      • Difficulty Setting Up Entra ID Authentication: Double-check that all the necessary permissions are granted in the Azure portal.
      • Authentication Errors During Sign-In: Ensure your configuration settings are correct and the right AppID is being used.
      • Verify Configuration:
      • After configuring, test the authentication by attempting to sign in to your application. Make sure that multifactor authentication prompts are functioning as expected.

    Further Resources

    If you encounter any issues while following these steps, feel free to ask! Good luck with the transition! 

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