> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/artifact-registry/3.0/troubleshooting-and-resources/authorization-and-authentication.md).

# Authorization & Authentication

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[Issues Pulling Images](/artifact-registry/3.0/troubleshooting-and-resources/authorization-and-authentication/auth-401-errors.md)
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[403 Errors in Pipeline Execution](/artifact-registry/3.0/troubleshooting-and-resources/authorization-and-authentication/auth-403-errors.md)
{% endcontent-ref %}