B2B collaboration is great. For example, you can share a canvas app with guest users or invite users to use with Azure Active Directory B2B collaboration . One of the steps in the process is adding B2B collaboration users in the Azure portal. But when you try adding a license assignment you maybe faced with the unexpected “License assignments failed”:
Why would assignment of a free license fail? The reason is revealed when you click “License assignments failed” link:
License cannot be assigned to a user without a usage location specifiedAlbert Einstein, 1948
That’s right, just edit the user profile and tell Azure where the user is and you’ll be able to assign the license, free or otherwise.