How to Fix a 500 Internal Server Error on Your Hosting

A 500 Internal Server Error means that a web server encountered an unexpected condition and could not complete a request. The message is deliberately generic, so it does not identify the exact cause. The problem may be in your website code, a plugin or theme, a server configuration, or a hosting resource limit.

If your website suddenly displays a 500 error, work through the checks below in order. Start by recording when the error appeared and checking the server logs before changing files or settings. This approach helps you identify the cause without making unnecessary changes that could create further problems.

What Is a 500 Internal Server Error?

HTTP status code 500 is a general server-side error. It tells the browser that the server could not fulfil the request, but it does not explain why. Visitors may see messages such as “500 Internal Server Error”, “HTTP Error 500”, “Internal Server Error” or a blank error page.

Unlike a 404 error, which indicates that a requested resource could not be found, a 500 error points to a failure while the server was processing the request. The cause can sit in the application, the web server, PHP, a database connection, or another part of the hosting stack.

Common Causes of a 500 Internal Server Error

• Incorrect server rules: A syntax error or unsupported directive in an Apache .htaccess file can prevent requests from being processed.
• PHP fatal errors: Incompatible code, an outdated plugin, a theme conflict or an unsupported PHP feature can stop a script.
• Resource limits: A script may exceed the available PHP memory, execution time, process or other hosting limits.
• File ownership or permissions: Incorrect permissions or ownership can prevent the web server or PHP process from accessing required files.
• Server or proxy configuration: Web server, PHP-FPM, firewall, CDN or reverse-proxy problems can also produce a 500 response.
• Application or database problems: A failed database operation or an application exception may cause the request to fail.

These are possible causes, not a diagnosis. The error log is usually the best place to find evidence of what happened during the failed request.

How to Fix a 500 Internal Server Error

Before troubleshooting, make a current backup of your website and database if possible. If you can reproduce the problem on a staging copy, investigate there first. Avoid making several changes at once: test one change, check the result, and record what you changed so you can reverse it.

Step 1: Check the Server Error Logs

Start with the error logs for the website and the time the error occurred. In cPanel, look for the Errors or Metrics area, or use the log viewer provided by your hosting control panel. Some hosts also provide access to Apache, Nginx or PHP-FPM logs.

1. Record the URL that returns the error and the approximate time, including the time zone.
2. Open the relevant error log and review entries around that time.
3. Look for a PHP fatal error, an uncaught exception, a file path, a line number, a permission denial or a server configuration message.
4. If the log names a plugin, theme or script, investigate that component before changing unrelated settings.

For a WordPress site, you can use WordPress debugging to write diagnostic messages to a log without displaying them to visitors. On a production website, keep error display disabled and use logging instead. Enable debugging only when needed, protect the log because it may contain sensitive paths or data, and turn debugging off and remove or secure the log when troubleshooting is complete.

For more detail, read our guide on using error logs in cPanel to troubleshoot website problems and the official WordPress debugging documentation.

Step 2: Check Recent Changes and PHP Compatibility

Think about what changed shortly before the error began. Recent plugin or theme updates, new code, a PHP version change, a migration or a server configuration update can help narrow the investigation.

• If the error started immediately after a plugin or theme update, test that component first.
• Check that your WordPress version, theme and plugins support the PHP version configured for the account.
• Review the hosting control panel for PHP errors, resource-limit notices or a recent configuration change.
• If you recently deployed custom code, roll back that change on a staging copy or ask the developer to inspect the relevant error.

Do not switch PHP versions at random on a live site. Confirm compatibility and take a backup before changing the version, then test the site and its important functions.

Step 3: Check the .htaccess File (Apache or Compatible Servers)

On Apache-based hosting, a damaged or invalid .htaccess file can cause a 500 error. This file can contain rewrite rules and other directory-level configuration. It is not used in the same way by every web server, so this step applies to Apache and compatible configurations such as LiteSpeed, not every Nginx setup.

1. Use your hosting file manager or SFTP to open the website document root.
2. Locate .htaccess. Enable the option to show hidden files if it is not visible.
3. Download a copy, then rename the live file to .htaccess-backup.
4. Test the website. If it loads, the old rules may contain the problem.
5. For WordPress on Apache, sign in to the dashboard and visit Settings > Permalinks, then save the settings to regenerate the standard rewrite rules.

If renaming the file makes no difference, restore the backup before continuing. If the site uses custom redirects, access controls or security rules, have the hosting provider or developer review them before replacing the file. For a deeper explanation, see what an .htaccess file does and the WordPress Apache and .htaccess guidance.

Step 4: Review PHP Memory and Other Hosting Limits

A script that reaches a PHP or hosting resource limit may fail before the request completes. Check the PHP error log and the limits shown in your hosting control panel before changing anything. Relevant settings can include memory_limit, max_execution_time, input limits and the account’s CPU or process limits.

For WordPress, WP_MEMORY_LIMIT in wp-config.php can request a memory allocation for WordPress, but it cannot override a lower limit enforced by the host or PHP configuration. Ask your provider to confirm the effective PHP limit and whether the account is reaching it.

Avoid copying a php_value directive into .htaccess as a universal fix. That directive is not supported in every PHP handler or server configuration and may itself trigger a server error. Use the PHP settings tool in your control panel, a supported php.ini or user configuration file, or ask your host to adjust the setting where permitted.

Step 5: Check File Permissions and Ownership

Incorrect file permissions can stop the web server or PHP process from reading files or accessing directories. On many standard WordPress installations, directories commonly use 755 and files commonly use 644, but the correct values depend on the server’s user and group ownership and hosting configuration.

• Check the ownership and permissions of the affected files and directories.
• Compare them with the hosting provider’s recommended settings for your server.
• Correct only the items that are demonstrably wrong, preferably with help from your host.
• Never set every file and directory to 777; that grants excessive write access and creates a security risk.

If the error log reports “permission denied”, provide the exact path and timestamp to your hosting provider so they can check ownership as well as permissions.

Step 6: Test WordPress Plugins and Themes

A plugin or theme can trigger a fatal PHP error or conflict with another component. If you can access the WordPress dashboard, deactivate the most recently changed plugin first and test the page again. If the site recovers, reactivate components one at a time until you identify the one that reproduces the error.

If the dashboard is unavailable, use SFTP or the hosting file manager only after taking a backup. You can temporarily rename the wp-content/plugins directory to disable plugins, then restore its original name after the test. If the site works with plugins disabled, isolate the faulty plugin by testing them individually. You can also test with a compatible default WordPress theme to check for a theme conflict.

Do not leave plugins disabled as a permanent workaround. Once the cause is identified, update, replace or report the affected component, and confirm that the site works with the required plugins enabled.

Step 7: Check Core Files, the Database and Server-Side Services

If the logs point to missing or damaged WordPress core files, use the dashboard’s core reinstall option where available, or replace the relevant core files with a clean copy of the same WordPress release. Back up first. Do not overwrite wp-content or wp-config.php, and do not upload files from an untrusted source.

If the logs mention database connection failures, check the database service and the credentials in wp-config.php without exposing them publicly. If the error affects several websites on the same account or began without a site change, the cause may be at server level. Your hosting provider may need to inspect PHP-FPM, Apache or Nginx, database services, firewall rules, proxy configuration or account resource limits.

Step 8: Contact Your Hosting Provider with Useful Evidence

If the error persists, contact your hosting provider rather than repeatedly changing configuration files. Include:

• The affected website URL and the exact page or action that fails.
• The date, time and time zone when the error occurred.
• The error-log entry or a screenshot with passwords, tokens and personal data removed.
• Any recent updates, migrations, PHP changes or configuration edits.
• Whether the whole website or only one page is affected, and whether the dashboard is accessible.

Ask the provider to check the web server and PHP logs for the supplied timestamp, confirm whether resource limits were reached, and identify any server-side configuration or service errors. This gives support a clear starting point for investigation.

How to Prevent 500 Internal Server Errors

• Keep software maintained: Update WordPress core, plugins and themes, and remove components you no longer use.
• Back up before changes: Keep recoverable copies of website files and the database, and periodically test that a restore works.
• Use staging for significant changes: Test plugin updates, theme changes and custom code before deploying them to the live website.
• Monitor logs and availability: Review recurring PHP errors and use uptime monitoring so you can investigate failures promptly.
• Watch hosting resources: Review memory, CPU, process and storage usage, and upgrade or optimise when the website consistently exceeds its plan limits.
• Use supported configurations: Keep PHP and server settings compatible with the software running on your website.

Frequently Asked Questions

Does a 500 Internal Server Error mean my website has been hacked?

No. A 500 error does not by itself indicate a security breach. It can result from a code error, configuration issue, resource limit or server problem. If you also notice unfamiliar files, unexpected administrator accounts or suspicious activity, investigate the site security separately.

Can a plugin cause a 500 error in WordPress?

Yes. A plugin can cause a fatal PHP error or conflict with another plugin, theme or PHP version. Check the error log and test recently changed plugins one at a time to identify the cause.

Will clearing my browser cache fix a 500 error?

Usually not. A 500 response is generated by the server or an application behind it. You can try another browser or a private window to rule out a local display issue, but server logs are more useful for diagnosing a genuine HTTP 500 response.

Should I increase PHP memory to fix the error?

Only if the logs or hosting resource information show that the site is reaching its memory limit. Increasing memory will not fix unrelated problems such as invalid rewrite rules, incompatible code or file ownership errors.

How long does it take to fix a 500 Internal Server Error?

It depends on the cause. A simple configuration mistake may be quick to correct, while a plugin conflict, database issue or server-level fault may require more investigation. The relevant error logs usually help shorten the diagnosis.

Final Thoughts

A 500 Internal Server Error is a general warning that a request failed on the server, not a diagnosis of the underlying fault. Start with the logs, identify what changed, and test one possible cause at a time. Back up your website before editing files, avoid risky permission changes, and involve your hosting provider when the issue points to server configuration or resource limits.

If you run a WordPress website and would rather have the hosting environment and routine technical tasks supported by a specialist team, explore DaManager WordPress Hosting to review the available features and plans.

Further technical reading: WordPress common errors, WordPress debugging and Apache .htaccess documentation.