
404 Error
A 404 error is an HTTP response indicating that the server cannot find the requested page.
A 404 error is an HTTP response indicating that the server cannot find the requested page. It is appropriate when a URL has no content and no relevant replacement, but broken internal links or accidental deletions can send buyers and crawlers to a dead end.
What causes a 404 error?
A 404 commonly appears after a slug change, deleted CMS item, mistyped link, incomplete migration or outdated external link. The server remains reachable, but the requested resource is missing. Regular website crawling helps reveal which internal URLs return this status and which pages link to them.
Why do 404 errors matter for SEO?
A genuine 404 tells search engines not to index that URL. That is correct for intentionally removed content. The problem is unintended 404s on valuable pages: visitors lose their route, search engines cannot access the content, and internal links point at unavailable resources. Review affected URLs alongside their indexing status and inbound links before prioritising fixes.
When should you redirect a 404?
Use a permanent redirect only when the missing URL has a close replacement that satisfies the same intent. A relevant 301 redirect in Webflow is suitable after renaming a page or consolidating equivalent content. If nothing comparable exists, keep the true 404 instead of sending every removed URL to the homepage. Also avoid soft 404s: error-like pages that incorrectly return HTTP 200.
How do 404 errors affect AI Search?
AI search systems need retrievable source pages before they can evaluate or cite their contents. A missing evidence, product or research page cannot contribute useful information at that URL. Treat important 404s as an access problem within your AI retrieval checks: test URLs used in citations, internal links and sitemaps, then restore or redirect them where justified.
How should B2B teams manage 404s?
Classify each URL as intentionally removed, moved, mistyped or unexpectedly broken. Restore accidental deletions, update internal links directly, redirect moved pages to the closest equivalent, and leave genuinely obsolete URLs as 404 or 410. Maintain a useful custom error page with navigation, but verify that it still returns 404. A structured Webflow SEO implementation should combine periodic crawls, redirect QA, sitemap checks and monitoring after launches or migrations.
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Written by:
Niels Voshol is co-founder of Overflow Agency, focused on B2B website strategy, AI Search, SEO, positioning and conversion.
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