404 errors are one of the most common technical problems on WordPress websites. When Google Search Console flags these errors, it hurts your search visibility, user experience, and SEO. Learning how to fix every 404 error page in WordPress is essential for a technically sound site.
This guide gives you a step‑by‑step method to identify, fix, and prevent 404 errors. You can handle a few broken pages or hundreds of outdated URLs. The techniques here work for both.
What Is a 404 Error in WordPress?
A 404 error happens when a browser asks for a page that the server cannot find. In WordPress, this usually occurs because:
- You deleted or moved content.
- You have incorrect internal links.
- Your permalink settings are wrong.
- A plugin generated a URL that no longer exists.
When Googlebot finds these missing pages, it records them in Google Search Console under the “Not Found” coverage report.
Why Do 404 Errors Matter?
Excessive 404 errors can signal poor site maintenance. Search engines may indirectly lower your rankings. Also, 404 errors cause link equity loss. When another site links to your old content, the SEO value of that link disappears if you do not redirect it properly.
For WordPress professionals, fixing 404 errors is not optional. It is a basic part of technical SEO maintenance.
How to Find All 404 Errors in Google Search Console
Step 1: Navigate to the Coverage Report
Log in to Google Search Console. Go to Pages under the “Index” menu. Then filter by “Not found (404)” . This shows every page Googlebot tried to crawl but could not find. Each URL includes the discovered date and, if available, the referring page that linked to it.
To inspect a specific URL, click the Inspect URL icon (magnifying glass). This tool shows you which pages contain links to the broken URL. That helps you trace the origin of the error.
Step 2: Export the 404 Error List
For sites with many 404 errors, export the full list. Use the export function inside the Coverage report. This gives you a CSV file. You can then sort, filter, and prioritise errors by discovery date, crawl frequency, and number of referring sources.
Priority order: Fix errors on high‑traffic pages first. Then fix errors on pages with many external backlinks.
How to Fix 404 Errors Using AI (Recommended Method)
This method uses the Sky SEO Manager plugin and Google’s Gemini API to automatically suggest redirects for every 404 URL.
Step 1: Install and Activate the Plugin
Go to your WordPress dashboard. Navigate to Plugins > Add New. Search for “Sky SEO Manager”. Install and activate it.
Direct link: https://wordpress.org/plugins/sky-seo-manager/
Step 2: Add Your Gemini API Key
During the onboarding wizard, go to step 3.
You need a Gemini API key. Get it from AI Studio : https://aistudio.google.com/
Go to “Get API key” , create a key, and copy it.
Paste the key into the Sky SEO Manager settings and click Save.
Step 3: Go to the 404 Monitor Tab
In your WordPress admin menu, go to Skyplugins > Sky SEO Manager.
Click on the “404 Monitor” tab.
Step 4: Import Your GSC CSV File
Look for the section labelled “Import URLs from GSC Coverage Report” .
Click to upload the CSV file you exported from Google Search Console.
Step 5: Let AI Find Suggestions
After uploading, click “Find AI Suggestions” .
Wait for the plugin to analyse each broken URL using Gemini AI. The AI will suggest the most relevant existing page or post to redirect to.
Step 6: Review and Apply
The plugin will show you each AI suggestion. Review them one by one.
If a suggestion is correct, click Apply to create a 301 redirect.
If a suggestion is wrong, you can skip it or manually enter a different target URL.
Step 7: Repeat Until All URLs Are Processed
Keep running the process for batches of URLs. The AI can handle many at once, but you may need to repeat for very large lists. Work through all 404 errors until none remain.
Step 8: Validate the Fixes in Google Search Console
Go back to Google Search Console. Navigate to Pages > Not found (404) .
Click the “Validate fix” button. Google will re‑crawl the affected URLs and confirm that they now return 200 or redirects.
Congratulations. You have fixed all 404 errors using AI.
Manual Fixes for 404 Errors (If You Do Not Use AI)
If you cannot use the AI method, these manual techniques still work well.
How to Fix Permalink Configuration Problems
One common cause of 404 errors is misconfigured permalinks. WordPress may have trouble routing URL requests to the right content.
To fix this:
- Go to Settings > Permalinks in your WordPress dashboard.
- Do not change any settings. Just click “Save Changes” .
- This flushes the permalink structure and regenerates rewrite rules.
This simple step often resolves many 404 errors. Try it first before anything else.
How to Fix a Missing or Corrupted .htaccess File
The .htaccess file in your WordPress root folder controls URL routing. If this file is missing or corrupted, all pages except the homepage will return 404 errors.
To fix:
- Connect to your site via FTP or your hosting file manager.
- Locate the
.htaccessfile in the root directory (same folder aswp-config.php). - Rename the existing file to
.htaccess_old(to back it up). - Create a new
.htaccessfile with these standard WordPress rules:
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress
- Save the file. Then go back to Settings > Permalinks and click “Save Changes” again.
This normally fixes 404 errors caused by broken routing rules.
How to Set Up Redirects for 404 Errors
Once you know which URLs are broken, you need to redirect them to working pages.
Individual Redirects (For a Few Errors)
For a small number of 404 errors, use the Redirection Setting in SkySEOManager plugin.
- Go to 404 Monitor Tab
- Click on Add Redirect, Here add your old URL and new URL where it redirects to and Save it.
Which Redirect Type Should You Use?
- 301 redirect – Permanent move. Passes 90–99% of link equity to the new URL. Use this for most 404 fixes.
- 302 redirect – Temporary move. Use only if the content will return to the original URL later.
Bulk Redirects (For Dozens or Hundreds of Errors)
If you have many 404 errors, use the CSV import feature in SkySEOManager.
- Prepare a CSV file with two columns: Source and Target.
- Each row is one redirect mapping.
- Save the file as UTF‑8.
- In Redirection, go to the “Import” section.
- Upload your CSV file. The plugin creates all redirects at once.
Pattern‑Based Redirects
Some plugins let you create rules that handle groups of similar URLs. For example, if you renamed a category and all URLs changed from /old-category/ to /new-category/ , you can write one rule that redirects all of them automatically.
How to Handle Dynamic URL 404 Errors
Plugins often generate dynamic URLs for carts, wishlists, filters, or search results. These URLs may include query parameters that change frequently. Normal redirects do not work well for them.
Solutions:
- Configure your redirection plugin to ignore query strings when matching URLs. Then
/product-widgetand/product-widget?color=blueare treated the same. - Create a custom 404 page that captures the query parameters and offers relevant navigation alternatives.
How to Prevent Future 404 Errors
Run Regular Technical Audits
Schedule a monthly review of your Google Search Console Coverage report. Catch new 404 errors immediately after they appear. Early detection makes fixes easier and limits link equity loss.
Plan URL Changes Before You Make Them
If you restructure your site or remove content, write down all URL changes first. Create redirects before you delete the old pages. This proactive approach eliminates the gap where 404 errors would normally appear.
Set Up Monitoring Alerts
Use SkySEOManager Plugin 404 Monitor Feature to Monitor 404 URLs it’ll send you email digest weekly or as soon as it happens you can set it in 404 Monitor > Settings.
