Invalid Users

Starting in Microsoft Dynamics 365 F&O version 10.0.39, Microsoft enforced security guidelines for external users. Effectively, Microsoft disabled the cross-tenant access in Dynamics 365 F&O. This means that external users from a different tenant, can’t log in to Dynamics 365 unless they are created as a guest user in your own client. In this post, I will elaborate on the change, how it can impact your environments and how to setup external users correctly.

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