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Applies to Product -Dynamics 365 Commerce


What’s happening?
Users are unable to log into the production system, receiving an error indicating that the account needs to be added as an external user.


Reason:
This is related to a change in Microsoft's login policy, which requires users to be added to the Microsoft Entra ID tenant as external or guest users. This change was communicated through a notification sent to the organization's message center.


Resolution:

  1. Add the affected users to the Microsoft Entra ID tenant as external or guest users to prevent login issues.
  2. For bulk invitations, refer to the following resources:
  3. Bulk invite guest users for B2B collaboration tutorial - Microsoft Entra External ID
  4. Tutorial for bulk inviting B2B collaboration users - Microsoft Entra External ID
  5. Ensure that the organization checks the message center for any notifications regarding security policy changes to avoid similar issues in the future.