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Microsoft Dynamics 365 | Integration, Dataverse...
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How to setup cross tenant access for Dynamics CRM

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Hello,
I have a Microsoft 365 tenant (Tenant A) where Dynamics 365 is already set up and licensed. Now I’m planning to create another Microsoft 365 tenant (Tenant B) and I would like users from Tenant B to be able to access the Dynamics 365 instance that is hosted in Tenant A.
My questions are:
  • What is the correct way to configure cross-tenant access for Dynamics 365?
  • Should I invite users from Tenant B as Azure AD B2B guest users into Tenant A and assign them Dynamics 365 licenses there?
  • Is there any way to let Tenant B users keep their own licenses, or must all Dynamics 365 licenses be assigned in Tenant A?
  • Are there any supported scenarios for cross-tenant authentication or federation that allow Tenant B accounts to directly use Dynamics 365 in Tenant A?
In short: Dynamics 365 stays in Tenant A, but I want Tenant B users to log in and use it securely.
Thanks in advance for your guidance!
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