What is a 404 error and a soft 404?

A 404 is the HTTP status for a missing page. A soft 404 is a page that looks like “not found” but returns 200 (OK), or an empty page, or a redirect of all missing pages to the home page.

• Return a real 404 (or 410 for removed on purpose) for pages which do not exist.
• Redirect with 301 only if there is a close replacement page.
• Make a helpful custom 404 page.

See Custom 404 Page.

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