Errors Happen to Everyone
Every WordPress user encounters errors at some point. Some are minor annoyances; others can take your site offline entirely. The good news is that most WordPress errors have well-documented solutions. Here are the 10 most common errors I encounter and exactly how to fix them.
Error 1: White Screen of Death (WSOD)
The white screen of death is a blank white page with no error message. It usually means a PHP error is halting execution. Fix it by:
- Enable WP_DEBUG in wp-config.php: define('WP_DEBUG', true);
- Check the error log to identify the problematic file
- Common causes: memory limit exceeded, incompatible plugin, or theme conflict
- Increase memory limit: define('WP_MEMORY_LIMIT', '256M');
- Disable all plugins and re-enable one by one to find the culprit
Error 2: Error Establishing Database Connection
This error means WordPress cannot connect to its database. Causes include incorrect database credentials, corrupted database, or database server issues.
Fix: Check wp-config.php for correct database name, username, and password. If credentials are correct, repair the database by adding define('WP_ALLOW_REPAIR', true) to wp-config.php and visiting yoursite.com/wp-admin/maint/repair.php.
Error 3: 500 Internal Server Error
A 500 error is generic - something went wrong on the server, but the server is not telling you what. Troubleshoot by:
- Check .htaccess for syntax errors (rename it to test)
- Increase PHP memory limit
- Check PHP error logs for specific error messages
- Disable plugins to isolate the problem
- Re-upload core WordPress files in case of corruption
Error 4: Connection Timed Out
This error usually means your site is using more resources than your hosting plan allows. Heavy plugins, traffic spikes, or poor hosting cause this.
Fix: Disable resource-heavy plugins, upgrade your hosting plan, and optimize your database. If you are on shared hosting, this error is a sign you have outgrown it.
Error 5: Syntax Error
Syntax errors happen when code is incorrectly written - missing semicolons, unclosed brackets, or wrong PHP syntax. This often occurs after editing functions.php or plugin files.
Fix: Access the file via FTP or hosting file manager, find the line with the error (the error message usually specifies the line number), and fix the syntax. If you cannot find the error, revert the file to its previous version from a backup.
Error 6: 404 Page Not Found
Pages that previously worked suddenly return 404 errors. This usually happens after changing permalinks or moving content.
Fix: Go to Settings > Permalinks and click Save Changes without modifying anything. This flushes the rewrite rules. If specific pages are affected, check for redirect issues or manually update the URLs.
Error 7: Missed Schedule Post Error
WordPress cron does not always fire reliably, causing scheduled posts to miss their publish time.
Fix: Install the WP Crontrol plugin to manage cron jobs. Or disable WP-Cron and set up a real cron job through your hosting panel. For immediate fix, manually change the post status from "Scheduled" to "Published."
Error 8: Plugin/Theme Compatibility Issues
After updating WordPress, a plugin or theme may become incompatible. Symptoms include broken functionality, white screens, or error messages.
Fix: Always update plugins and themes on a staging site first. If a update breaks your site, access it via FTP, rename the plugin folder to deactivate it, then find an alternative or contact the developer.
Error 9: Mixed Content Warnings
After installing SSL, you may see "mixed content" warnings because some resources still load over HTTP instead of HTTPS.
Fix: Install the Really Simple SSL plugin, which automatically fixes most mixed content issues. For remaining issues, search your database for http:// references and update them to https:// using the Better Search Replace plugin.
Error 10: Slow Admin Dashboard
The WordPress admin area becomes slow and unresponsive. This is usually caused by too many dashboard widgets, heavy plugins, or slow external API calls.
Fix: Disable unnecessary dashboard widgets, deactivate plugins you do not use, and check if any plugin is making slow external API calls. The Query Monitor plugin helps identify slow database queries and hooks.
Prevention Is Better Than Cure
The best way to handle WordPress errors is to prevent them. Keep regular backups, update carefully on staging, use quality plugins and themes, choose good hosting, and monitor your site with uptime monitoring tools. Most errors are preventable with proper maintenance.