WordPress Fix Guide

WordPress Pages Showing 404 Error Fix

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Do any of these sound familiar?

Your WordPress site is down, or at least a significant part of it. You're seeing a "404 Not Found" message when trying to access your content, and it's impacting your users and your business. This isn't just a minor glitch; it means your pages are inaccessible, and you need a solution now.

You might be experiencing any of these specific issues:

If any of these match, you are in the right place.

Your WordPress pages are suddenly showing 404 errors without a clear cause.
After a recent update, you're hit with a WordPress 404 error after update across many pages.
Your WordPress homepage 404 error is preventing any site access, or conversely, your WordPress 404 on all posts but home page works.
You're seeing 404s on specific content types, like a WordPress custom post type 404 error.
For multisite setups, WordPress multisite 404 errors on subdomains are blocking access.
You've recently migrated or changed domains, and now your site is broken. This often requires specific fixes, as detailed in our guide on WordPress 404 After Migration, Domain Change or SSL.

Why this happens

A WordPress pages showing 404 error typically indicates a problem with how WordPress generates or interprets its URL rewrite rules. These rules dictate how your site's URLs are mapped to actual content. When this mapping breaks, the server can't find the requested page.

Common culprits include a corrupted .htaccess file, which is crucial for permalinks. An update to WordPress core, a theme, or a plugin can sometimes overwrite or conflict with these rules, leading to a WordPress 404 error after update. This is especially true if the update wasn't fully compatible or introduced a bug.

Issues with how custom post types are registered or how a multisite network handles its subdomains can also cause specific 404s. For instance, if your WordPress custom post type 404 error persists, it often points to an issue in the post type's rewrite arguments or a failure to flush permalinks after registration. Similarly, 404 errors after migration or domain changes are almost always related to outdated URL references or incorrect server configurations.

Steps you can take right now

Not comfortable with file editing or FTP? Skip these steps — one wrong move can deepen the damage. Get it fixed professionally →

Work through these in order. Each step is safe unless noted otherwise.

1

Refresh Permalinks

Go to your WordPress admin dashboard, navigate to Settings > Permalinks. Without changing anything, simply click the Save Changes button. This often flushes the rewrite rules and can resolve a WordPress permalinks causing 404 error.

2

Check .htaccess File

Connect to your server via FTP or file manager. Locate the .htaccess file in your WordPress root directory. Sometimes, this file gets corrupted or has incorrect rules. Rename it to .htaccess_old. Then, go back to Settings > Permalinks in WordPress and save again. This will generate a fresh .htaccess file. If your site works, carefully review the old file for any custom rules you need to re-add. Be cautious: incorrect edits to .htaccess can break your site entirely.

/public_html/.htaccess
3

Deactivate Plugins

A newly installed or updated plugin can sometimes conflict with WordPress rewrite rules, leading to my WordPress pages are all 404 not found. Deactivate all plugins via FTP by renaming the wp-content/plugins folder to plugins_old. If your site works, rename it back to plugins and reactivate plugins one by one to find the culprit.

/wp-content/plugins
4

Verify Custom Post Type Registration

If you're experiencing a WordPress custom post type 404 error, ensure your custom post type is registered correctly and its rewrite rules are flushed. This usually involves visiting the Permalinks settings page after registering or modifying a custom post type. Check your theme's functions.php or a custom plugin for the registration code.

5

Increase PHP Memory Limit

While less common for 404s, insufficient PHP memory can cause unexpected behavior. You can try increasing your PHP memory limit by adding define('WP_MEMORY_LIMIT', '256M'); to your wp-config.php file, just above the /* That's all, stop editing! Happy publishing. */ line.

/wp-config.php
6

Seek Professional Help

If none of these steps resolved it, this is where professional help saves time.

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How WebFixHQ fixes this for you

When your WordPress pages are showing 404 errors, our immediate focus is on restoring your site's accessibility and functionality. We don't just apply generic fixes; we diagnose the specific root cause of your 404s.

Our process includes:

  • Deep Permalinks Analysis: We investigate your WordPress permalink structure, .htaccess file, and server rewrite rules to identify any discrepancies or corruption causing the WordPress permalinks causing 404 error.
  • Plugin/Theme Conflict Resolution: We systematically identify if a recent update or a specific plugin/theme is causing the WordPress 404 error after update by conflicting with rewrite rules.
  • Custom Post Type & Multisite Debugging: For specific issues like a WordPress custom post type 404 error or WordPress multisite 404 errors on subdomains, we delve into the specific registration code and network configurations.
  • Database & Server Configuration Check: We verify your database for correct URL entries and ensure your server's Apache/Nginx configuration is properly handling WordPress rewrites.

We aim for same-day resolution, often within hours, getting your content back online swiftly. Get expert help for your broken site with our WordPress Errors & Crashes service.

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  • Expert Diagnosis: We don't guess; we pinpoint the exact cause of your 404 errors, whether it's permalinks, a plugin conflict, or server misconfiguration.
  • Transparent Pricing: You receive a clear, upfront quote for your WordPress pages showing 404 error fix. No hidden fees, no surprises.
  • Rapid Response: We understand your site being down is critical. Our team responds within hours, often providing a fix the same day.
  • No Fix, No Fee Guarantee: If we can't resolve your specific 404 issue, you don't pay. It's that simple.
  • Comprehensive Support: Beyond the fix, we offer a free website audit to identify other potential issues. Chat with us now to get started.

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Common questions

Why are my WordPress pages suddenly showing 404 errors?
This often happens due to corrupted permalink rules, a conflicting plugin or theme update, or issues with your server's .htaccess file. Less commonly, a database issue or a recent migration could be the cause, breaking the link between your URLs and content.
Can I fix a WordPress 404 error on all posts but the home page works myself?
You can try basic steps like refreshing permalinks or checking your .htaccess file. However, if the issue is deeper, like a complex plugin conflict or server-level misconfiguration, it can be time-consuming and risky without technical expertise.
What if my WordPress custom post type 404 error persists after flushing permalinks?
If flushing permalinks doesn't work, the problem likely lies in the custom post type's registration code itself, or a conflict with another plugin modifying rewrite rules. It requires a deeper dive into your theme's functions.php or custom plugin code.
How much does WebFixHQ charge to fix WordPress pages showing 404 errors?
We provide transparent, upfront pricing after a quick assessment of your specific 404 error. There are no hidden fees, and you'll know the exact cost before any work begins.
Is a WordPress 404 error after update always caused by the update itself?
Not always directly, but an update can expose existing incompatibilities or corrupt rewrite rules. It's a common trigger, but the underlying problem might be an older plugin, theme, or server setting that the update then conflicts with.