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api-error-code-401-authentication-failed.mdx

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title API error code 401 - Authentication failed
description Resolve the W&B Inference 401 "Authentication failed" error caused by incorrect API credentials, project entity, or project name.
keywords
Authentication & Access

A 401 error with the message "Authentication failed" means your authentication credentials are incorrect or your W&B project entity and/or name are incorrect.

Why this happens

The W&B Inference API requires valid authentication credentials to process requests. This error occurs when:

  • Your API key is invalid, expired, or revoked
  • Your W&B project entity name is incorrect
  • Your W&B project name is incorrect

What you can do

  1. Verify your API key

    • Check that you're using the correct API key for your account
    • Regenerate your API key if needed from your W&B settings

  2. Check your project details

    • Ensure your W&B project entity (organization or username) is correct
    • Verify that the project name matches an existing project

  3. Contact support

    • If the issue persists after verifying your credentials, reach out to W&B support

{/* AUTO-GENERATED: tab badges /} Authentication & Access {/ END AUTO-GENERATED: tab badges */}