- Understanding the Error
- 502 Bad Gateway indicates server received invalid response from inbound server
- Error occurs when server acts as gateway or proxy between servers
- Can affect SEO if site is down for 6+ hours
- Common Causes
- Server overload due to resource constraints
- Browser problems or outdated versions
- Firewall blocking internet providers
- DNS issues or incorrect domain resolution
- Troubleshooting Methods
- Try reloading page or accessing site in different browser
- Clear browser cache and check DNS settings
- Test on different devices and disable CDN/firewall temporarily
- Review plugins and themes for misconfigurations
- Check error logs and restart PHP
- Monitor PHP timeout settings
- Host-Related Solutions
- Contact hosting provider for server status
- Consider using isolated hosting like Kinsta
- Monitor server logs for error patterns
- Check PHP configuration settings for timeout limits