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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Auth token warning using oauth M2M","articleBody":"This was originally posted in dbt-databricks project and I was asked to cross post i here.\n\nRelated to:  https://github.com/databricks/dbt-databricks/issues/1246\n\nWhen running dbt in an Azure Devops Agent (for continues integration reasons) I get this warning:\n\n```\n09:13:52  Concurrency: 6 threads (target='test')\n09:13:52  \n09:13:53  databricks-sql-connector adapter: Token exchange failed, using external token: %s\nWARNING:databricks.sql.auth.token_federation:Token exchange failed, using external token: 'access_token'\n```\nIt still works, the project runs, but I would like to understand what might be happening here.\nI am not able to reproduce this on my local machine using the same M2M profile.\nMaybe you can point me in the right direction?\n\nProfile using an azure service principal:\n```\n    test:\n      host: the_host\n      http_path: the_path\n      catalog: the_catalog\n      schema: test\n      threads: 6\n      type: databricks\n      auth_type: oauth\n      azure_client_id: \"{{ env_var('DATABRICKS_CLIENT_ID') }}\"\n      azure_client_secret: \"{{ env_var('DATABRICKS_CLIENT_SECRET') }}\"\n```\n\nPython 3.11.13\nRunning with dbt=1.10.8\nRegistered adapter: databricks=1.10.9\n\nThe Devops Azure Agent runs an ubuntu-24.04 Image\nVersion: 20250929.60.1","author":{"url":"https://github.com/septponf","@type":"Person","name":"septponf"},"datePublished":"2025-10-30T16:39:58.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/702/databricks-sql-python/issues/702"}