404 Not Found: What Is It And How To Fix It?

You’re about to read a guide, book a service, or buy a product—then the page disappears. That dead-end experience is the 404 Not Found error, and it can quietly drain traffic, trust, and rankings if it happens on important URLs. This article explains what a 404 Not Found error is, why it occurs, how it affects SEO, and exactly how to fix it with practical steps you can apply today. Keep reading to learn how to find 404s, repair them correctly, and prevent them long-term.

What Is a 404 Not Found Error?

A 404 Not Found error is an HTTP status code that appears when a visitor or search engine requests a URL that your server cannot locate. The website is reachable, but the specific page at that address is missing.

404 Not Found vs Similar Errors

• 404 Not Found: Page is missing at that URL.

• 410 Gone: Page was intentionally removed and isn’t coming back.

• 500 Server Error: Server failed to load a page that may exist.

• 403 Forbidden: Page exists, but access is blocked.

• Soft 404: Page looks missing, but the server incorrectly returns a “200 OK” status.

Why 404 Not Found Happens

A 404 Not Found error usually happens after pages are moved, renamed, removed, or linked incorrectly. Here are the most common causes.

URL Changes Without Redirects

If a page slug changes (for example, during a redesign or SEO update), old links still point to the previous URL. Visitors and Google hit a 404 Not Found until a redirect is added.

Common triggers include:

• Renamed services or categories

• Changed permalink structure

• Moved blog posts or product pages

• Site migrations and platform changes

Deleted or Unpublished Pages

Pages often get removed when:

• A product is discontinued

• A service is no longer offered

• A campaign page expires

• A post is deleted instead of updated

If those URLs still have traffic or backlinks, the 404 becomes a bigger issue.

Broken Internal Links

Internal links can break due to:

• Typos in URLs

• Outdated menu and footer links

• Hardcoded links in templates

• Old blog posts linking to removed pages

Broken internal links create repeat 404 Not Found errors and should be fixed first.

External Links Pointing to Wrong URLs

Other websites may link to your old or incorrect URLs. This can happen even if your site is clean. If those links send valuable traffic, you can often recover it with the right redirect.

Trailing Slash, Uppercase, and HTTPS Issues

Depending on your server setup:

• /Page may not equal /page

• /services may not equal /services/

• http:// may not equal https://

Inconsistent URL rules can generate avoidable 404s.

How 404 Not Found Affects SEO and Users

Not every 404 is bad. Some are normal. But repeated 404 Not Found errors on important pages can create real damage.

User Experience Problems

When visitors hit a 404, they often:

• Lose trust quickly

• Leave the site and return to Google

• Abandon the action they were about to take

404s hurt the most when they affect:

• Service pages

• Product pages

• Pricing pages

• Booking/contact pages

• High-ranking blog posts

SEO Problems

Important 404 errors can cause:

• Lost organic traffic to pages that used to rank

• Lost link equity from backlinks pointing to dead URLs

• Wasted crawl activity on missing pages

• Broken internal linking paths that weaken topical structure

When a 404 Is Acceptable

A 404 Not Found is usually fine when:

• The URL is random or spammy

• The page never existed

• The page was removed with no replacement and no demand

A 404 is a problem when:

• The URL has backlinks

• The URL still gets traffic

• The URL is linked internally

• The page is part of your conversion path

How To Fix 404 Not Found Errors

Fixing a 404 Not Found error is about choosing the correct action: restore, redirect, repair links, or intentionally leave it as 404.

Best Fix Options at a Glance

Step 1: Find 404 Not Found Errors

Start by collecting the URLs that return a 404 Not Found status. Focus on the ones that matter most.

Prioritize 404s that have:

• Organic traffic

• Backlinks

• Internal links

• High-intent user journeys (menus, CTAs, product paths)

Step 2: Fix Broken Internal Links First

If your own site points to dead URLs, fix those links before adding redirects.

Common places to check:

• Main navigation and footer

• Buttons and CTAs

• Old blog posts

• Sidebar widgets

• Reusable blocks and templates

What to do:

• Update the link to the correct URL

• Replace links to removed pages with a relevant alternative

• Remove low-value links that no longer serve a purpose

Step 3: Add 301 Redirects for Moved or Replaced Pages

If a page moved or has a clear replacement, create a 301 redirect.

Redirect rules that protect SEO:

• Redirect to the most relevant equivalent page

• Avoid redirect chains (A → B → C)

• Avoid redirect loops (A → B → A)

• Keep redirects organized and documented

Good redirect targets include:

• Updated service page

• Updated blog post

• New product page

• Relevant category page (only if it matches intent)

Avoid redirecting everything to the homepage. It frustrates users and can be treated like a low-quality signal.

Step 4: Restore Pages That Still Matter

If a URL still gets traffic, has backlinks, or matches a core service/product, restoring the page can be the best fix. This is often better than redirecting if the page topic is unique.

Restore when:

• It was removed accidentally

• It still represents a core offering

• It ranks (or used to rank) for valuable keywords

• Users continue searching for it

Step 5: Use 410 Gone When Removal Is Permanent

If a page is intentionally removed and should not return, a 410 Gone status can be appropriate. It clearly signals that the content is permanently unavailable.

Use 410 when:

• The page has no replacement

• You want search engines to drop it faster

• The content is intentionally retired

Step 6: Fix Soft 404 Issues

A soft 404 happens when a page looks like “not found,” but the server returns a success status code. This confuses search engines and can harm indexing quality.

Fix soft 404s by:

• Returning a real 404 for missing content

• Restoring content if it should exist

• Redirecting to a relevant page if it moved

• Avoiding thin “empty” pages that add no value

Step 7: Improve Your 404 Page to Keep Users On-Site

Even well-maintained sites get some 404 visits. A strong custom 404 page reduces bounce rates.

A good 404 page should include:

• A clear message that the page is missing

• A search box (especially for blogs and stores)

• Links to key categories or services

• A link back to the homepage

• Optional: a way to report the broken link

How To Prevent 404 Not Found Errors

Prevention saves time and protects SEO long-term.

Create a Redirect Process for URL Changes

Any time you change URLs, create a simple redirect map:

• Old URL → New URL

Do this for:

• Redesigns

• Rebrands

• Platform migrations

• Category restructuring

• Slug updates

Standardize URL Rules

Reduce formatting-based 404s by enforcing:

• HTTPS only

• Consistent trailing slash behavior

• Lowercase URLs

• Clean canonical URL signals

Run Regular Link Checks

A simple monthly routine helps:

• Crawl your site to catch broken internal links

• Review new 404 URLs

• Fix link sources first

• Redirect only when the match is truly relevant

Don’t Delete Valuable Pages Without Reviewing Performance

Before removing a page, check if it has:

• Organic traffic

• Backlinks

• Internal links

• Conversion value

If yes, consider updating, consolidating, or redirecting instead of deleting.

Conclusion

A 404 Not Found error is common, but it shouldn’t be ignored—especially when it affects pages that drive traffic, leads, or sales. The most effective approach is to find the 404s that matter, repair broken internal links, use 301 redirects for moved or replaced pages, restore pages that still have value, and keep truly retired pages as 404 or 410. With consistent monitoring and a clear redirect process, you can protect rankings, improve user experience, and keep your site technically clean.