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I understand that you are trying to create a resource, but you are getting error "AADSTS50020: User account '******@domain.com' from identity provider {IdentityProviderURL} does not exist in tenant {ResourceTenantName}".
When a guest user attempts to access an application or resource within the resource tenant, the sign-in process fails, and an error message is displayed.
Are you utilizing a personal account to create a resource in the Azure portal?
When you try to log in to Azure portal by using your personal Microsoft Accounts (Outlook, Hotmail or OneDrive), you are connected to the Microsoft Services tenant by default. Within the default tenant, there is no linked directory for performing any actions. This behavior is expected.
For this purpose, you need to create your own tenant rather than using the Microsoft Services (f8cdef31-a31e-4b4a-93e4-5f571e91255a) tenant. When you create a new tenant, you by default become the Global Administrator of the new tenant and have full access to all the options in that tenant.
To create an Azure account with a new tenant, open in-private/incognito browser window (just to avoid SSO), access https://azure.microsoft.com/en-us/free/ to create a free Azure account.
Once the new account is created, you should be able to see and switch to the new tenant by clicking on the settings icon as highlighted below:
To know more details about error message: Error AADSTS50020
You will get customer service phone number here based on your country: Global Customer Service phone numbers
Hope this helps. Do let us know if you any further queries.
Thanks,
Navya.
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