You manage the Microsoft Teams environment for a company.
The company has federation configured only for the human resources (HR) department, and only with VendorA. User1, who is part of the HR department, cannot communicate with VendorA.
You need to troubleshoot why User1 cannot communicate with VendorA.
What should you do?
A. Ensure that federated access is enabled in the external access policy for the user.
B. Ensure the user is added as a guest in the VendorA tenant.
C. Ensure that federated access is enabled in the external user communication policy for the user.
D. Ensure the target domain for VendorA is listed in the Allowed Domains list.
E. Ensure the tenant is enabled for federation.
Reference:
https://docs.microsoft.com/en-us/skypeforbusiness/set-up-policies-in-your-organization/create-custom-external-access-policies