How to Fix the 500 Internal Server Error in WordPress

A 500 Internal Server Error in WordPress indicates that something went wrong on the server, but it's not specific enough to point directly to a cause. Here's a systematic approach to finding and fixing it on your dotCanada hosting account.

Step 1: Check the Error Logs

Log in to cPanel and open the Error Logs tool (or check Metrics > Errors). The log will often show exactly which file or process triggered the error. This is your quickest path to a fix.

Step 2: Rename Your .htaccess File

A corrupted .htaccess file is a very common cause of 500 errors. Via FTP, navigate to your site's root and rename .htaccess to .htaccess_old. If the error goes away, go to Settings > Permalinks in WordPress and click Save Changes to regenerate a clean .htaccess.

Step 3: Disable All Plugins

A plugin conflict can cause a 500 error. Via FTP, rename the /wp-content/plugins/ folder to plugins_disabled. If your site loads, rename the folder back and reactivate plugins one by one to find the culprit.

Step 4: Increase PHP Memory

Add define('WP_MEMORY_LIMIT', '256M'); to your wp-config.php file. You can also increase PHP memory through the MultiPHP INI Editor in cPanel.

If none of these steps resolve the issue, contact our support team - we'll dig into the server logs and get your site back up fast.