Did you know that 73 per cent of visitors will leave your site immediately and never return if they come across a broken link? You’ll probably agree that there’s nothing more frustrating than seeing a ‘Page not found’ message when you’re looking for important information or a product. As a website owner, this isn’t just a blow to your reputation, but also a serious SEO risk, as Google’s algorithm will be ruthlessly penalising poor user experience and a fragmented internal link structure as early as 2026.

In this guide, you’ll find out exactly what the most common causes of 404 errors are and how to fix them, how to automate error detection using modern monitoring tools, and how to keep your URL structure clean for good. You no longer need to worry about a lack of technical knowledge, as we’ll help you understand the processes from the file system level right through to WordPress plugins. We’ll show you the most effective methods for detecting error pages and guide you step by step through the technical solutions to ensure your website runs smoothly, improves its SEO ranking and attracts satisfied, returning visitors.

What is a 404 error and why is it crucial to fix it immediately?

A 404 error is not merely an annoying technical glitch, but a digital dead end that immediately halts the visitor’s navigation. Technically speaking, the HTTP 404 status code indicates that communication between the client and the server was successful, but the server could not find the requested resource. This can happen due to a mistyped URL, a deleted subpage or a faulty internal link. In 2026, users’ patience is at an all-time low; a single such error is enough to make a potential customer leave the site for good.

The deterioration in user experience (UX) is almost immediate. According to a 2024 analysis, 88 per cent of visitors are less likely to return to a website after just one bad experience. If someone clicks on an advert or a search engine result and is presented with a blank page, they decide to leave within 2.4 seconds on average. This high bounce rate directly signals to search engines that the page is irrelevant or neglected.

The SEO implications are even more serious than this. Google’s algorithm treats ‘dead’ links as a sign of poor quality. Search engine bots have a limited crawl budget. If the bots spend valuable minutes examining non-existent pages, they have less time left to index genuine content. Identifying the causes of 404 errors and rectifying them is therefore a fundamental ranking factor; unaddressed errors will slowly but surely push the website further down the search results.

The issue of credibility is also crucial. A business that fails to maintain its own digital presence comes across as amateurish and unreliable. If a visitor encounters errors, they are justified in assuming that the company’s services or products will be similarly flawed. To maintain trust, monitoring errors and rectifying them immediately is a fundamental business priority.

A quick guide to HTTP status codes: where does 404 fit in?

In web communication, servers respond to requests with three-digit codes. The 4xx error family covers client-side errors, as opposed to 5xx codes, which indicate server-side failures. The 404 code specifically indicates a ‘page not found’ status. It is important to distinguish between hard and soft errors. A soft 404 is a situation where a page appears to be missing to the user, but the server sends a successful response code to the search engine. The latter is particularly dangerous because Google attempts to index the error page, which damages the domain’s authority.

The impact of 404 errors on conversion rates and revenue

For online shops, a 404 error translates directly into a loss of revenue. If the link to a product advertised in a campaign breaks, the advertising cost is wasted and the purchasing process is interrupted. A survey of 500 people showed that customer trust drops by 42 per cent when errors occur repeatedly. Visitors will not bother looking for the correct link; they will simply buy from a competitor. To establish a stable technical infrastructure, it is worth reading our article ‘Web Hosting Guide for Beginners’, which will help you lay the foundations. When identifying the causes of 404 errors and rectifying them, the first step is always to check the infrastructure and continuously audit the internal link structure.

The most common causes of a 404 error: Why does a page disappear?

A 404 error is rarely a matter of chance. It is usually a series of specific decisions or minor oversights that lead to a visitor being confronted with a ‘page not found’ message. When identifying the causes of a 404 error and fixing it, the first step is always to pinpoint the exact source, as the solution depends on whether it is a simple typo or a more serious server-side configuration error.

One of the most common causes is simply a mistyped URL. Although this is a visitor error, it is the website owner’s responsibility to manage it. If a user types the address manually into their browser, the likelihood of making a mistake is statistically high. Surveys show that 7–10 per cent of visitors arriving via direct traffic make some sort of typing error when dealing with longer URLs consisting of multiple directories. A well-designed site does not leave the visitor to their own devices in such cases, but helps them find their way back on the right track.

Deleting content is also a common problem. When you simply remove an old blog post or a discontinued product from the database, the previous links become ‘dead’. If you do not set up a 301 redirect to the new or relevant content, the old URL may remain in Google’s index for weeks. The 404 Not Found status code tells the browser that, although the server is accessible, it cannot find the requested resource at the specified location.

Changing the URL structure – for example, altering the ‘slug’ – is particularly risky from an SEO perspective. Making a change simply to create a more descriptive title could cause you to lose the value of your existing backlinks. Server-side configurations, such as an incorrectly edited .htaccess file or poorly configured permissions, can also cause widespread errors. In such cases, the entire website may become inaccessible to visitors.

External links and broken links

It is often the case that the source of the error is not within your own website. Other websites or social media platforms may link to a subpage that has been taken down or moved. Managing traffic from social media is critical, as a Pinterest pin from years ago or an old Facebook post can still bring in relevant visitors today. Following a domain change or site migration, forgotten links can cause a massive drop in traffic if not all old URLs are properly redirected.

Technical reasons behind the scenes: DNS and permissions

Technical issues lurking in the background can also cause unexpected downtime. Due to incorrect DNS settings, the domain name may not point to the correct hosting account, meaning the server cannot serve the requested content. File system permissions (CHMOD) can also be tricky. If the permissions for a file or folder are too restrictive, the server may sometimes return a 404 error for security reasons, rather than the more accurate 403 (Forbidden) code. Precise domain registration and DNS management are essential for a stable and continuous online presence.

Using a reliable infrastructure significantly reduces the likelihood of server-side errors. If you’re unsure about the technical settings, it’s worth seeking advice from the experts at a professional web hosting provider to help you set up the optimal configuration.

How can you find 404 errors on your website?

A fundamental part of maintaining your website is the regular detection of broken links. Identifying 404 errors is not merely a technical task, but is key to search engine optimisation and maintaining a good user experience. If a visitor clicks on a broken link, it leads to a loss of trust, and search engines interpret this as a sign of declining site quality.

Google Search Console is the primary tool that every website owner should use. Under the ‘Pages’ report, Google lists exactly which URLs it was unable to crawl due to a ‘Page Not Found (404)’ status code. This list is crucial because it directly shows what Google’s bot sees whilst crawling your website. It’s worth checking this dashboard at least once a week to look for any new errors.

Amongst third-party software, Screaming Frog SEO Spider is one of the most effective tools. The free version can perform a comprehensive crawl of your website for up to 500 URLs and immediately flags all internal and external broken links. If you’re looking for a quicker solution, Dead Link Checker can be run directly from your browser and scans every subpage of the specified domain in a matter of seconds; the W3C Link Checker is slower but provides a more detailed report for each page. What is a 404 error? Technically, it is a standard HTTP response code indicating that the client was able to communicate with the server, but the server could not find the requested file or resource.

For WordPress users, the Redirection or 404 Solution plugins offer a real-time solution. These plugins log every instance where a visitor lands on a non-existent page, so you can immediately see if an out-of-date advert or a misspelt social media post is directing traffic to the wrong place.

Troubleshooting using cPanel

Server-side diagnostics often provide a more accurate picture than any external software. Log in to the aWh dashboard and, in the ‘Metrics’ section, select the ‘Error Log’ menu item. Here you can view the last 300 error messages, including missing images and scripts. For a more detailed analysis, use the ‘Raw Access Logs’ feature. These files record every single server request, allowing you to see the exact source and time of any failed requests. You can easily download and analyse these logs using the cPanel hosting features.

Setting up automated monitoring

By 2026, automation will be mandatory instead of manual checks. Uptime monitoring tools such as StatusCake or UptimeRobot check the availability of your website every minute. Set up email or push notifications for your critical subpages, such as the shopping basket or key service pages. If a URL unexpectedly returns a 404 error, you can take immediate action before large numbers of visitors encounter the problem. By 2026, automated monitoring will save website owners at least 12 working hours per month by replacing manual link checks. When identifying and rectifying the causes of 404 errors, this proactive approach helps to maintain your website’s authority and search engine ranking.

Fixing a 404 error step by step

Eliminating error pages is not merely a matter of aesthetics, but a cornerstone of search engine optimisation and user experience. When identifying the causes of 404 errors and rectifying them, our most important tool is the use of a 301 (permanent) redirect. This protocol signals to search engines that the content has been permanently moved to a new location, meaning that 95–99 per cent of the authority previously built up and the ranking positions achieved can be transferred to the new URL.

If you have permanently deleted a piece of content, you have two options. If you have a page on a similar topic, redirect the traffic there. If there is no relevant replacement, you should direct the visitor to a useful, customised error page that helps them find their way back to the main menu items. Manually updating the internal link structure is also an essential part of the rectification process. Setting up redirects is pointless if ‘broken links’ remain in the menu or blog posts, as these place an unnecessary load on the server and slow down the crawling process.

Managing redirects in CMS systems

WordPress users can avoid technical coding by using the Redirection plugin. This plugin automatically monitors URL changes and offers to create redirects. A critical consideration is avoiding redirect chains. If page ‘A’ redirects to ‘B’, and then ‘B’ redirects to ‘C’, this significantly increases response times. Always redirect directly to the final destination. To maintain the website’s speed, professional WordPress hosting optimisation is also crucial, as poorly managed redirects consume extra resources.

Technical fix to the .htaccess file

On Apache-based servers, the quickest solution is to edit the .htaccess file. This allows us to handle requests at server level, even before the CMS loads. Using the code snippet below, we can safely redirect an old page to the new one:

Redirect 301 /regi-oldal-neve https://weboldalad.hu/uj-oldal-neve

If you do not have your own error page and non-existent URLs are not handled by a CMS (for example, on a hand-coded HTML or PHP page), you can set up the 404.html file placed in the root directory as your error page by adding this line:

ErrorDocument 404 /404.html

Next, open a URL that definitely doesn’t exist and check whether your own page appears. If you’ve permanently deleted content and there’s nowhere to redirect it to, the 410 Gone status code is more accurate than a 404: it signals to search engines that the URL has been intentionally removed (Redirect gone /torolt-oldal).

When editing manually, even the smallest syntactic error – such as a missing space – can result in a 500 Internal Server Error, which immediately renders the entire website inaccessible. If you have hundreds of URLs to manage, or if you’re unsure about using regular expressions, it’s worth seeking help from expert support. The aWh team, whose members have each been operating servers for 20 years, can help with such technical fine-tuning to ensure your website remains stable.

Choose security and manage your website via a professional interface: take a look at our cPanel-based hosting plans, where setting up redirects takes just a few clicks.

Prevention and creating professional 404 error pages

A 404 error is inevitable in the life of a dynamically growing website. From a user experience perspective, how we handle these moments is critical. Over 70 per cent of visitors immediately close the window when they encounter a cold, technical error message. Our aim is to turn this dead end into an opportunity. A well-designed error page not only improves the bounce rate but also strengthens trust in the brand. When it comes to the causes of and solutions for 404 errors, prevention is at least as important as technical fixes.

Let’s use unique graphics and a style that suits our brand. Humour is an excellent way to ease tension, but let’s stay within the bounds of professionalism. If we run an online shop, the ‘Great Offers’ or ‘Most Popular Products’ sections displayed on the error page can even generate conversions despite the error. The key is not to leave the user stranded in a digital dead end.

The elements of the ideal 404 page

Every second counts in the battle to retain attention. The page must make it immediately clear what has happened, without placing the blame on the user. Be sure to include the following elements:

• A clear message: The phrase ‘Sorry, the page cannot be found’ should be clearly visible and written in a human tone.
• Internal search box: Let’s place a search box in the centre of the page so that visitors can search for the content they want straight away.
• CTA (Call to Action): Use an eye-catching button to direct visitors to the homepage or the most important service pages.
• Contact us: Please let us know about any issues so that we can resolve them as quickly as possible.

Automated maintenance in the aWh environment

By 2026, manual link checking will no longer be an effective solution for website owners. Automation is the key to stable and SEO-friendly operation. We can set up cron jobs that scan our internal links at specified intervals and send automatic reports on broken links. This proactive approach helps ensure that identifying the causes of 404 errors and rectifying them is not merely a case of putting out fires after the event.

aWh’s infrastructure fully supports these processes. Through its modern control panels, we can easily access server-side log files (error logs), which show exactly which URLs are causing errors for visitors. If you encounter more complex redirection issues, aWh’s expert support team will help you optimise your configuration files. For a reliable foundation, choose professional web hosting solutions where the technical infrastructure guarantees seamless operation. With a regular maintenance plan and the right hosting partner, the number of error pages can be minimised, thereby improving the website’s credibility and search engine optimisation metrics.

If, as a visitor, you encounter a 404 error

Not every 404 error is the website owner’s fault: often, the requested content does exist, just in a different location. In such cases, it’s worth trying the following one by one:

1. Refresh the page (F5) – it might just be a loading issue.
2. Check the address: a typo, a missing or extra slash, or a link copied incorrectly could be the cause.
3. Go up a level in the URL: instead of pelda.hu/blog/kategoria/cikk, open the page pelda.hu/blog/kategoria and look for the link there.
4. Use the site’s search function, or search for the address in a search engine along with the domain name.
5. Clear your browser’s cache and cookies if the site works on other devices but not on yours.
6. Let the site administrator know: if the content has moved to a new address, setting up a redirect will help other visitors too.

Video: Renny Gleeson: 404, the story of a page not found (TED)

Stabilise your website’s traffic and eliminate technical errors

Ignoring 404 errors directly harms your Google ranking and deters potential customers in an instant. Regularly auditing your website and setting up 301 redirects for broken links will ensure that your SEO results remain stable right through to 2026. Consistently applying the steps outlined in the section on the causes of 404 errors and how to fix them will protect your domain’s credibility in the digital marketplace. The foundation of technical stability always lies in a well-chosen, modern infrastructure and fast response times.

With 99.9% uptime and a team whose members each have 20 years’ experience, aWh supports website owners. With our expert support team behind you, you can be sure that server-side issues will no longer hinder your business growth. Don’t let technical shortcomings or slow loading times cause you to lose valuable visitors to your competitors.

Choose reliable NVMe SSD hosting and say goodbye to server failures!

Proactive maintenance and a professional technical infrastructure are the surest route to a successful and sustainable online presence.

Frequently asked questions about 404 errors

Does Google penalise websites for 404 errors?

Google does not directly penalise websites for displaying 404 errors, as it regards these as a natural part of the internet. However, too many broken URLs impair the user experience and waste search engine crawlers’ resources. If an important, high-traffic subpage is taken down without being fixed, it will lead to a drop in organic rankings and a loss of visitors. It is worth checking your Search Console data at least twice a month to identify critical errors.

What is the difference between a 301 and a 302 redirect?

A 301 redirect indicates a permanent migration, whilst a 302 code simply signifies a temporary redirect to search engines. From an SEO perspective, a 301 redirect is almost always the best option, as it transfers 90–95 per cent of the link equity from the old page to the new URL. Use a 302 redirect if you are redirecting visitors to another page only for a short period of maintenance or for a seasonal promotion lasting 2–3 weeks.

How can I check whether a URL returns a 404 error?

The easiest way to check the status of a URL is to use your browser’s developer tools: press the F12 key and check the ‘Network’ tab. To check hundreds of links at once, the free version of Screaming Frog SEO Spider can help with up to 500 URLs. When identifying the causes of 404 errors and rectifying them, this technical audit is the first step in identifying broken internal links and deleted content.

Do I need to fix every 404 error?

There’s no need to fix every single 404 error, especially if the URL in question receives no traffic and isn’t linked to by any valuable external links. Focus on those pages that previously accounted for more than 5 per cent of your traffic, or which are linked to by relevant websites. Leave randomly generated, meaningless broken URLs as 404s; Google’s systems will automatically remove them from the index within 30–90 days.

How can I create a custom 404 page in WordPress?

You can create a custom 404 page via the customisation menu in most modern templates or by manually editing the 404.php file. If you’d prefer to avoid coding, you can use the “404page” plugin to designate any pre-built static page as your error page. A well-structured error page should include a search box and links to the most important categories, so that 70 per cent of visitors do not leave the website immediately after encountering the error.

Can the web hosting provider cause a 404 error?

Yes, the hosting provider’s server-side settings, such as a faulty .htaccess file or Nginx configuration issues, often generate unexpected 404 errors. On aWh’s NVMe-based hosting plans, automated systems minimise the likelihood of server-side configuration errors. If the files physically exist on the server but an error message still appears, check the permissions, which should be 755 for folders and 644 for files.

What should I do if my homepage returns a 404 error?

If the homepage returns a 404 error, the first step is to check that the index.php or index.html file is present in the root directory. For WordPress sites, simply resaving the ‘Permalinks’ settings often resolves the issue, as this updates the contents of the .htaccess file. This is a critical error that must be rectified immediately, as whilst the error persists, 100 per cent of conversions are lost and the money spent on adverts is wasted.

Does Search Console help fix 404 errors?

Google Search Console is the most effective free tool for generating an accurate list of broken URLs found by Googlebot under the ‘Pages’ menu. Here you can see the date the error was first detected, as well as the source page where the broken link appears. Once you have identified the causes of the 404 error and made the necessary corrections, you can initiate the validation process here; Google will then re-index the affected pages within 3–14 days.

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