WordPress 404 Error: 7 Proven Ways to Fix It

A WordPress 404 error appears when someone requests a URL that your website cannot find. Visitors may see a “404 Not Found” message or a custom “Page Not Found” screen instead of the content they expected.

This can happen for simple reasons, such as someone typing the wrong URL. It can also point to a more important problem, such as broken permalink rules, a changed page URL, a failed website migration, or an internal link that still points to an old address.

Not every 404 needs to be fixed. In fact, Google recommends that genuinely deleted or unavailable content can return an appropriate 404 or 410 response when there is no replacement.

The important part is knowing which 404 errors matter and what action makes sense for each one.

What Is a WordPress 404 Error?

A 404 status means the requested resource could not be found.

For example, imagine that your website has this page:

example.com/wordpress-seo-guide/

A visitor enters:

example.com/wordpress-seo-guides/

If that second URL does not exist, WordPress or the web server can return a 404 response.

The same thing can happen when a page has been deleted, a post slug has changed, or WordPress is unable to correctly process its permalink structure.

WordPress uses permalinks as the permanent URLs for posts, pages, categories, and other content. Its documentation recommends treating these URLs as stable addresses because other websites, users, and search engines may rely on them.

Why Does a WordPress 404 Error Happen?

A 404 error does not have one universal cause. The right fix depends on what changed.

Broken Permalink Rules

Broken or outdated rewrite rules are one of the classic causes of WordPress 404 problems.

This is particularly common when pretty permalinks stop working. WordPress notes that Apache’s mod_rewrite configuration can cause 404 errors when it is not enabled or working correctly.

If every post suddenly returns a 404 while the WordPress dashboard still shows the content correctly, permalink or server configuration should be one of the first things you investigate.

Deleted Pages and Posts

Deleting a page naturally makes its old URL unavailable.

That does not necessarily mean something is broken.

Suppose you published an outdated announcement three years ago and removed it because it no longer has any value. If nothing relevant replaces that content, allowing the old URL to return a proper 404 may be the correct solution.

The mistake is assuming that every missing URL needs to be redirected somewhere else.

Changed URLs

Changing a page slug creates another common source of 404 errors.

For example, you might change:

/wordpress-security-tips/

to:

/wordpress-security-guide/

The new URL works, but visitors and websites that still use the old URL may reach a 404 unless you provide a suitable redirect.

This becomes more important when the old URL already has backlinks, organic traffic, bookmarks, or internal links.

Website Migration

Migrations can create large numbers of 404 errors when the old URL structure does not match the new website.

This can happen when moving from another CMS to WordPress, changing domains, switching from HTTP to HTTPS, restructuring categories, or changing permalink formats.

Google recommends mapping old URLs to their corresponding new URLs during site moves. It also recommends allowing deleted content to return a proper 404 or 410 when there is no replacement.

Incorrect URLs

Sometimes the website is working perfectly.

A visitor may simply enter the wrong address.

For example:

/contact-us/

instead of:

/contact/

You do not need to create redirects for every possible typo. A normal 404 is often the appropriate response when the requested URL has never existed.

Plugin, Theme, or Server Conflicts

WordPress sites rely on plugins, themes, rewrite rules, and server configuration. A conflict in any of these areas can sometimes produce unexpected 404 responses.

WordPress documentation specifically identifies server rewrite configuration and custom post type conflicts among possible causes of WordPress 404 problems.

How to Fix a WordPress 404 Error

The best approach is to start with the simplest explanation and move toward more advanced troubleshooting only when necessary.

Refresh the Permalink Rules

If existing WordPress pages suddenly return 404 errors, start by visiting Settings → Permalinks in your WordPress dashboard.

You do not necessarily need to change your preferred permalink structure. Simply opening the Permalinks screen refreshes WordPress’s rewrite rules. WordPress documents this behavior directly.

Test the affected URL again after doing this.

This simple step can resolve certain permalink-related 404 problems without requiring code changes.

Check the Page or Post Slug

If only one page is returning a 404, check whether its URL has changed.

Open the page in WordPress and inspect its slug. WordPress allows the URL portion of a page or post to be edited from the editor.

Make sure you are testing the current URL rather than an outdated one.

Look at Internal Links

A page may work perfectly while your website continues sending visitors to its old URL.

For example, you may have updated a blog post’s URL but forgotten to update links inside older articles.

That creates an avoidable user experience problem.

When you find an internal link that points to a 404 page, update the link to the correct destination. This is usually better than creating unnecessary redirects simply to compensate for links you control.

Check Redirects

If a page has permanently moved to another URL, a relevant redirect can preserve the connection between the old and new addresses.

For example:

/old-wordpress-guide/

could redirect to:

/wordpress-guide/

provided the second page genuinely replaces the first.

Avoid sending unrelated old URLs to the homepage just because it is convenient. Google warns that inappropriate redirects can result in soft 404 behavior and provide a poor experience for visitors.

Investigate .htaccess and Server Configuration

If refreshing permalinks does not solve the problem, the issue may exist at the server level.

On Apache servers, WordPress relies on rewrite functionality for many pretty permalink structures. WordPress notes that mod_rewrite problems can cause 404 errors and recommends checking the server configuration when resetting permalinks does not resolve the issue.

If you are not comfortable editing .htaccess, avoid making random changes. A hosting provider or experienced developer can inspect the configuration without risking additional problems.

Do 404 Errors Hurt SEO?

A 404 error by itself does not mean that Google has penalized your website.

The real question is why the URL returns 404 and whether that response is appropriate.

If a visitor requests a page that never existed, a 404 is normal.

If you intentionally removed an outdated page and there is no relevant replacement, a 404 can also be appropriate. Google explicitly recommends using a 404 or 410 response for content that has been deleted when it is not being moved to another URL.

The situation changes when an important page accidentally returns 404.

Imagine a page that receives steady organic traffic and has valuable backlinks. If that page suddenly becomes unavailable because of a permalink problem, you have a genuine SEO and user experience issue.

That is why the goal should not be zero 404 errors.

The goal should be zero unnecessary 404 errors on valuable URLs.

How 404 Errors Can Affect User Experience

Imagine clicking a link that promises a detailed guide and landing on a page that simply says “Not Found.”

The visitor has to decide whether to search your website again or leave.

One isolated 404 probably will not matter much. Repeated broken links across important pages can make a website feel poorly maintained.

This is particularly frustrating when the broken page is linked from your navigation, an important article, or a marketing campaign.

A useful 404 page can reduce that frustration by helping visitors find another relevant destination.

Should You Redirect Every 404?

No.

This is one of the most important rules when dealing with WordPress 404 errors.

A redirect makes sense when the old URL has a clear, relevant replacement.

Suppose you remove /best-wordpress-hosting/ and replace it with /wordpress-hosting-guide/. If the new article genuinely covers the same subject and replaces the old content, redirecting the old URL can be sensible.

But if /old-product-review/ has been permanently removed and no comparable page exists, sending visitors to the homepage may be misleading.

In that situation, keeping the old URL as a proper 404 can be better.

Google’s current site-migration guidance specifically says that deleted content should return a 404 or 410 when it is not being moved to a new URL.

404 vs 301: Which Is Better?

Neither response is universally better.

A 301 redirect is appropriate when a URL has permanently moved and there is a suitable destination.

A 404 is appropriate when the requested resource does not exist and there is no relevant replacement.

Think about the visitor’s intent.

If someone requests an old article and you have a substantially equivalent new article, take them there.

If no equivalent exists, do not manufacture one simply to avoid seeing a 404 in a report.

This approach keeps your website’s URL structure honest and avoids unnecessary redirect chains.

How to Find 404 Errors on WordPress

You can find broken URLs through several sources, but the most important step is to distinguish meaningful errors from harmless ones.

Google Search Console can help you understand which URLs Google has encountered. Your website analytics can show whether visitors are landing on missing pages. A crawler can reveal broken internal links, while server logs can provide additional information about requests reaching your website.

For a small site, manually checking important URLs may be enough.

For a larger website, regular crawling and monitoring become much more useful because thousands of old or externally requested URLs can accumulate over time.

The key is not to fix every URL blindly. First ask whether the URL is important, whether it was supposed to exist, and whether a relevant replacement is available.

How to Create a Useful WordPress 404 Page

Even a well-maintained website will receive requests for pages that do not exist.

Your 404 page should therefore help the visitor recover.

Instead of displaying a completely empty error message, provide clear navigation and a way to search the website. You can also highlight useful content or popular sections if that fits your site’s design.

WordPress documentation recommends creating a 404 template that helps visitors find useful content when the requested page cannot be found.

Keep the design consistent with the rest of your website. A visitor should immediately understand that they are still on your site and have options for continuing.

What Is a Soft 404?

A soft 404 is different from a normal 404.

With a normal 404, the server communicates that the requested page does not exist.

A soft 404 can occur when a page looks like a missing or empty page but returns a successful response instead of an appropriate error status.

This distinction matters because simply redirecting every missing URL to a generic page does not necessarily solve the underlying problem.

Google’s documentation also discusses soft 404 situations and explains that incorrect redirects and pages without useful content can contribute to this classification.

How to Prevent WordPress 404 Errors

Prevention starts with treating URLs as important website assets rather than disposable strings.

When you publish an important page, keep its URL stable whenever possible. WordPress itself describes permalinks as permanent URLs and recommends stable URL structures.

If you need to change a URL, decide what should happen to the old address before making the change.

Update internal links, review important external references, and prepare redirects where a genuine replacement exists.

The same principle becomes especially important during migrations. Before launching a redesigned or migrated website, create a URL mapping so valuable old URLs have appropriate destinations on the new site. Google recommends reviewing redirects, updating sitemaps, and checking for crawl errors during site moves.

Common Mistakes When Fixing 404 Errors

One of the biggest mistakes is trying to eliminate every 404.

That approach often creates unnecessary redirects and can make the website’s URL structure more complicated.

Another mistake is changing permalink settings repeatedly without identifying the actual cause. Refreshing rewrite rules can solve certain problems, but it will not restore a page that was intentionally deleted.

It is also risky to edit .htaccess or server configuration without understanding what the existing rules do.

Finally, do not assume that every 404 reported in an SEO tool requires immediate action. Some URLs are old, irrelevant, mistyped, or generated by external websites. Focus your attention on URLs that matter to users, search engines, and your business.

A Practical Way to Diagnose a 404

When an important WordPress page suddenly returns a 404, start by asking a simple question:

Does the content still exist?

If it does, check the current slug and permalink configuration. Refresh the rewrite rules through the WordPress Permalinks screen and test again. If the problem affects many pages, investigate the server and rewrite configuration rather than treating each URL individually. WordPress specifically recommends checking rewrite functionality when pretty permalink 404s persist.

If the content no longer exists, decide whether it should be restored, redirected to a genuinely relevant replacement, or left as a 404.

That decision is more important than the number of 404 errors shown in an SEO tool.

Conclusion

A WordPress 404 error is not something you need to fear every time you see one.

Some 404 responses are completely normal. Others reveal broken links, outdated URLs, permalink problems, migration mistakes, or missing content that deserves attention.

The smartest approach is to diagnose the URL before choosing a solution.

If the content still exists, fix the underlying URL or permalink problem. If the page moved, redirect it to a genuinely relevant replacement. If the content was intentionally removed and no suitable replacement exists, letting the URL return a proper 404 can be the right choice.

Most importantly, do not measure your SEO health by how quickly you can reduce a 404 report to zero. Focus on fixing the broken URLs that actually affect users, valuable content, and your site’s ability to be crawled and understood.