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SMTP "The Azure AD Authentication Flow provider has not been initialised"

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Hi BC community,

I am getting an error when trying to authenticate an SMTP email account in D365 BC.

The Azure AD Authentication Flow provider has not been initialised.

Internal session ID:
61ca65be-fc23-4104-9aa6-0a9c183c13cc

Application Insights session ID:
8072b523-853c-429f-854d-bbd227311d05

Client activity id:
5d6bbc68-4828-1c8e-da72-3608625a2a1a

Time stamp on error:
2023-12-08T01:59:02.3166140Z

AL call stack:
/Azure AD Auth Flow/(CodeUnit 6303).CheckProvider line 10 - Base Application by Microsoft
/Azure AD Auth Flow/(CodeUnit 6303).AcquireTokenByAuthorizationCodeWithCredentials - Base Application by Microsoft
/Azure AD Mgt./(CodeUnit 6300).AcquireTokenByAuthorizationCode - Base Application by Microsoft
/OAuth2 SMTP Authentication/(CodeUnit 4516).AuthenticateWithOAuth2 - Email - SMTP Connector by Microsoft
/SMTP Account/(Page 4512)./Authenticate with OAuth 2.0 - OnAction/(Trigger) line 4 - Email - SMTP Connector by Microsoft

An identical configuration and extension versions are working in a sandbox environment.

Has anyone seen a fix from MS on this issue?

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Dynamics 365 Business Central

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Judy Microsoft Employee on at

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Hi Sir,

Can you please check if you have correctly configured the SMTP email settings in D365 business cemental and If the SMTP server, port, and authentication details are accurate.

Since the error messages indicates that the Azure AD Authentication Flow provider has not been properly configured or initialized in your application.

Please Double check if you have correctly registered your application in Azure AD and obtained the necessary client ID and client secret.

The reference Document:

Register apps in Azure Active Directory B2C - Azure AD B2C | Microsoft Learn

Set up email in Business Central (contains video) - Business Central | Microsoft Learn

Best Regards,

Judy

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Lychees 4 on at

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Hi Judy,

I can confirm I have followed the above steps. The app registration is also successfully sending in a sandbox environment.

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Judy Microsoft Employee on at

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Hi Sir,

If the issue persists, it is highly recommended that you submit a request to Microsoft support for further investigation so that you can get this issue resolved more effectively.

Best Regards,

Judy

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CU01090949-2 4 on at

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The same in BC25 onprem. The thing is the table 6303 is empty. It is fulfilled on company init, but I have the company upgraded. I imported data there via Configuration package (Auth Flow Codeunit ID = 6303; Azure AD User Mgt. Codeunit ID = 9010) and it works.

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Khushbu Rajvi. 20,439 Super User 2025 Season 2 on at

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if this helps:https://community.dynamics.com/forums/thread/details/?threadid=88b0b51d-c527-4fa5-8ae2-a1bad4e68949

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YUN ZHU 95,595 Super User 2025 Season 2 on at

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Hi, It seems to be related to the update of Auth 2.0 for SMTP authentication. If all environments are the same, it is best to submit a SR to Microsoft to assist in investigation.

https://learn.microsoft.com/en-us/dynamics365/business-central/admin-how-setup-email?wt.mc_id=DX-MVP-5004336#use-smtp

Thanks.

ZHU

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