Troubleshooting Hub
Is your website down? Discover what common HTTP status codes mean and follow our step-by-step guides to get your server back online.
What Is a 500 Internal Server Error?
Learn why this vague error happens and the most common steps to troubleshoot and fix it.
Read Guide →Fixing the 502 Bad Gateway Error
A communication breakdown between servers. Here is how to diagnose gateway timeouts.
Read Guide →503 Service Unavailable Explained
Overloaded server or scheduled maintenance? Find out what causes a 503.
Read Guide →How to Fix a 504 Gateway Timeout
When a server waits too long for a response. Learn the difference between a 502 and 504.
Read Guide →Fixing 404 Not Found Errors
The ultimate guide to finding broken links, setting up 301 redirects, and saving your SEO.
Read Guide →What Is a 403 Forbidden Error?
Learn the common causes, like file permissions or strict .htaccess rules, and how to fix them.
Read Guide →Fixing DNS Resolution Failures
Seeing 'Server not found'? Learn how to flush your DNS and fix NXDOMAIN errors.
Read Guide →ERR_CONNECTION_REFUSED
What happens when a server actively rejects your connection request, and how to bypass it.
Read Guide →Error Establishing a Database Connection
The ultimate WordPress nightmare. Learn the 4 steps to get your database talking again.
Read Guide →The White Screen of Death (WSoD)
Diagnose and repair blank white pages caused by plugin conflicts or memory limits.
Read Guide →Fixing an Expired SSL Certificate
Seeing 'Your connection is not private'? Here is how to renew your HTTPS certificate.
Read Guide →Mixed Content Warnings
How to fix HTTP images and scripts loading insecurely on your supposedly secure HTTPS site.
Read Guide →ERR_TOO_MANY_REDIRECTS
Learn how to break out of infinite redirect loops caused by faulty .htaccess or CDN rules.
Read Guide →Understanding CORS Errors
Why Cross-Origin Resource Sharing blocks APIs, and how developers can configure headers to fix it.
Read Guide →