A 500 Internal Server Error is the web server's way of saying "something broke, but I cannot tell you exactly what." It is the most common server-side error on the internet. Unlike a 404 (page not found) or 403 (forbidden), a 500 error means the server itself encountered an unexpected condition that prevented it from completing the request. The error can affect your entire site or just specific pages, and it blocks visitors from seeing any content at all. Every minute your site shows a 500 error, you are losing visitors, sales, and search engine trust. Google will temporarily de-rank pages that consistently return 500 errors, and if left unfixed, your pages can be dropped from search results entirely.
Fix This Error Now →500 Internal Server Error can be caused by several issues. Here are the most common.
A syntax error, undefined function call, or incompatible PHP version causes the script to crash before producing output. This is the single most common cause of 500 errors. Your server's error log will show the exact file and line number.
The .htaccess file controls how Apache handles requests. A single misplaced character, a bad rewrite rule, or a rule added by a plugin can break the entire site. This is especially common after installing caching or security plugins.
Web servers require specific permission levels: files should be 644 (owner can read/write, others read only) and directories should be 755 (owner full access, others read/execute). If permissions are set to 777 or 000, the server will refuse to serve the files.
Shared hosting plans cap how much memory, CPU time, and simultaneous processes your site can use. A traffic spike, a heavy script, or a poorly optimized database query can push your site over these limits, triggering a 500 error until the load drops.
If the server cannot connect to your database, whether because of wrong credentials, the database server being down, or too many connections open, any page that needs database data will return a 500 error.
Incorrect Apache or Nginx configuration directives, misconfigured PHP-FPM pools, or wrong document root paths can all cause 500 errors. This often happens after a server migration or hosting provider update.
When your server runs out of disk space, it cannot write log files, session files, or temporary data. This causes scripts to fail silently and return 500 errors. Old log files, email queues, and unmanaged backups are common culprits.
A misconfigured SSL certificate, expired certificate, or mixed HTTP/HTTPS rules in server configuration can cause 500 errors. This is especially common right after installing or renewing an SSL certificate.
Deploying new code that contains errors, references missing files, or is incompatible with the server's PHP version will trigger 500 errors immediately. This includes interrupted updates, failed plugin installations, or auto-update failures.
70-80% of our customers have WordPress sites. Here are WordPress-specific causes for this error.
WordPress sites average 20-30 active plugins. When two plugins hook into the same function, load conflicting JavaScript libraries, or compete for the same database resources, the result is often a 500 error. Security, caching, and SEO plugins are the most common offenders.
WordPress writes to .htaccess whenever you change permalink settings. If this write fails partway through, or another plugin has added incompatible rules, the entire site goes down. This is one of the easiest 500 errors to fix: renaming .htaccess often restores the site immediately.
WordPress defaults to a 40MB-256MB PHP memory limit depending on hosting. Page builders, WooCommerce with large catalogs, and image-heavy sites can exceed this. The site works until a heavy page pushes it over the limit, then crashes with a 500 error.
A theme update, a child theme with syntax errors, or a theme that is not compatible with the current PHP version will crash the site. Since WordPress loads the theme on every page, a broken theme means a sitewide 500 error.
If a WordPress core update is interrupted by a timeout, low disk space, or a connection drop, the installation is left in a broken state. Files are partially overwritten, and WordPress cannot load. This requires manually replacing core files via FTP.
Editing wp-config.php with incorrect syntax, wrong database credentials, or a missing semicolon crashes WordPress immediately. This file is loaded before anything else, so any error here means a complete 500 error sitewide.
Plugins that schedule heavy background tasks through WP-Cron can overload the server during execution. Backup plugins, import tools, and bulk email senders are frequent causes. The 500 error appears intermittently during cron execution windows.
Pull your server error logs to find the exact error message, file path, and line number causing the failure
If a corrupted .htaccess is suspected, rename it and test. If the site loads, regenerate it from WordPress permalink settings
Disable all plugins via FTP by renaming the wp-content/plugins directory, then re-enable one by one to isolate the conflict
Switch to a default WordPress theme (Twenty Twenty-Four) to rule out theme-related crashes
Verify file permissions are set correctly: 644 for files, 755 for directories, 600 for wp-config.php
Check and increase the PHP memory limit in wp-config.php or php.ini if resources are being exhausted
Verify database credentials in wp-config.php and test the database connection directly
Check server disk space and clean up old logs, backups, or email queue files if the disk is full
If core files are corrupted, manually replace them with a fresh WordPress download via FTP
Test the fix thoroughly across multiple pages and devices, then monitor for 24 hours to confirm stability
A 500 Internal Server Error means something went wrong on the server, but the server cannot be more specific about what. This guide walks you through the most common causes and how to fix them.
Sometimes 500 errors are temporary. Wait 30 seconds and refresh. If the site is under heavy load, this alone might fix it.
Press Ctrl+Shift+Delete (Cmd+Shift+Delete on Mac) to clear cached data. Sometimes corrupted cache causes display issues.
Visit other pages on the site. If only one page shows the error, the problem is page-specific. Use downforeveryoneorjustme.com to check.
A corrupted or misconfigured .htaccess file is the #1 cause of 500 errors. Rename it to .htaccess_backup and refresh. If the site works, the file was the problem.
Files should be 644, folders should be 755. Wrong permissions cause 500 errors. Use your FTP client or hosting panel to check.
Add this to wp-config.php: define('WP_MEMORY_LIMIT', '256M'); Many 500 errors are caused by scripts running out of memory.
Your hosting control panel has error logs. Look for the exact error message. Common locations: /var/log/apache2/error.log or in cPanel under Errors.
Rename your /wp-content/plugins folder to /plugins_backup via FTP. If the site works, a plugin is causing the issue. Re-enable one by one to find the culprit.
DIY is great, but sometimes you need expert help. Consider calling us if:
The error persists after trying all steps above
You cannot access your hosting panel or FTP
The error logs show database or server configuration issues
You are not comfortable editing server files
Your site handles payments or sensitive data and needs to be fixed urgently
Fixed in 2 hours or your money back. We do not waste time.
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Our Broken Pages & Error Repair team has fixed thousands of sites with this exact issue. 2-hour turnaround, guaranteed.
The most common causes are PHP fatal errors, corrupted .htaccess files, exhausted memory limits, file permission problems, database connection failures, and plugin or theme conflicts. On WordPress sites specifically, plugin conflicts and .htaccess corruption account for roughly 70% of 500 errors we fix.
We fix most 500 errors within 30-90 minutes. The first step is reading the server error log, which usually points directly to the cause. Simple fixes like .htaccess corruption or a plugin conflict take 15-30 minutes. More complex issues like database corruption or server misconfiguration take 1-2 hours. Guaranteed done in 2 hours or your money back.
No. A 500 error is a server-side execution problem, not a data problem. Your posts, pages, images, and database are all still intact on the server. The error just prevents the server from building and delivering the page to visitors. Once we fix the underlying cause, everything comes back exactly as it was.
Most 500 error fixes cost $49-$99. Simple causes like .htaccess or plugin conflicts are $49. More complex root causes like server misconfiguration, corrupted core files, or database issues are $79-$99. You get a firm quote before any work starts, and if we cannot fix it, you pay nothing.
Page-specific 500 errors usually mean the problem is with a particular piece of content, a shortcode, or a plugin that only runs on those pages. For example, a contact form plugin with a bug will only cause 500 errors on pages using that form. We trace which code runs on those specific pages to isolate the issue.
Yes. If Googlebot encounters 500 errors when crawling your site, it will reduce crawl frequency and eventually drop those pages from search results. Google treats 500 errors as "the site is broken" and will temporarily suppress your rankings. The longer the error persists, the more damage it does. Fixing it quickly and ensuring Google re-crawls the fixed pages is critical.
This is extremely common. Hosting providers check their server infrastructure but do not debug your application code. A 500 error from a PHP bug, plugin conflict, or corrupted file is your site's problem, not the server's. The server hardware is working fine; it is the code running on it that is crashing. That is exactly what we diagnose and fix.
Intermittent 500 errors usually point to resource limits being hit during peak traffic, a WP-Cron task that runs periodically and overloads the server, or a memory leak that gradually exhausts available RAM. The site works when load is low but crashes under pressure. We identify the trigger and either optimize the code, increase limits, or reschedule the heavy tasks.
Keep WordPress, plugins, and themes updated, but always test updates on a staging site first. Use a quality hosting provider with adequate resources. Set up automated backups so you can quickly roll back. Monitor your error logs regularly. Do not install plugins from untrusted sources. We can also set up monitoring that alerts you the moment a 500 error occurs.
The update either introduced a bug, created a conflict with another plugin, or the update process was interrupted. If you can access the WordPress admin, try deactivating the recently updated plugin. If you cannot access admin at all, the fix requires FTP or SSH access to disable the plugin at the file level. This is one of the most common fixes we do.
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