Hello @Daniel Zielinski ,
Welcome to the Microsoft Q&A platform.
Unfortunately, Basic or Anonymous (requires configuration for HTTP access) is not supported in Azure Analysis services. It is supported in SQL Server Analysis Services.
Reference: Authentication methodologies supported by Analysis Services
Azure Analysis Services uses Azure Active Directory (Azure AD) for identity management and user authentication. Any user creating, managing, or connecting to an Azure Analysis Services server must have a valid user identity in an Azure AD tenant in the same subscription.
User authentication is handled by Azure Active Directory (AAD). When logging in, users use an organization account identity with role-based access to the database. User identities must be members of the default Azure Active Directory for the subscription that the server is in.
To learn more, see Authentication and user permissions and Connections to Azure Analysis Services use HTTPS.
Hope this helps. Do let us know if you any further queries.
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