What Is HTTP 404 Not Found?

HTTP 404 Not Found explained, and what it means when you see it in CI/CD and deployments.

HTTP 404 means the server could not find the requested resource.

What it means

A 404 means the URL points to nothing: a wrong path, a deleted resource, or a route that is not deployed yet. It can also mean a private resource hidden behind auth.

When you see it in CI/CD

In CI, a 404 on a package or artifact often means a wrong name/version or a registry that has not finished publishing. On a deploy health check, it can mean routing is not live yet.

Key takeaways

• 404 means the resource was not found.
• Often a wrong path or unpublished resource.
• Can mask a private resource behind auth.

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