How to resolve the issue of Exchange Online will begin retiring SMTP Basic Authentication

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Posted on by CU11120629-0

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I received the below email from Microsoft

Take action to resolve the issue in your environment.

Issue observed: One or more of your environments are currently using Exchange SMTP Basic Authentication. Please note that Exchange Online will begin retiring SMTP Basic Authentication on March 1, 2026.

Action required: If you're still using Basic authentication, to ensure continued service and gain enhanced security, migrate to OAuth 2.0 (Modern Authentication) before that date.

I dont know if this issue is from code or from business central functional side and how to resolve this, Please guide.

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Dynamics 365 Business Central

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Martin Dráb 237,753 Most Valuable Professional on at

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Moved from Integration, Dataverse, and general topics forum to Small and medium business | Business Central, NAV, RMS forum.

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