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You’re running into B2B “Guest” limits in the Founders Hub Sponsorship tenant. Guests can be given RBAC on Azure resources, but tenant policies often block key admin actions, and some Azure AI tasks are awkward as a Guest. Fix it by making your working identity a Member of the sponsorship tenant and assigning the right RBAC roles.
Make you a Member (not Guest) in that tenant Entra admin center → Entra ID → Users → your account → Convert to internal user. (Requires User Admin/GA.) Microsoft Learn
Alternatively, create a new cloud-only Member user in that tenant and use that to manage the sponsorship subscription. Guest permission limits are documented here. Microsoft Learn
Give you proper Azure RBAC on the subscription/resource group
- For general administration: Owner (or Contributor + User Access Administrator) at the subscription or RG scope.
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