First record the exact error, URL, time, recent changes, and whether the problem affects every visitor or only one device.
Common checks
- 403: check permissions, ownership, hotlink protection, and the document root.
- 404: check the URL, rewrite rules, and whether the file exists in the correct domain folder.
- 500: review application and cPanel error logs, PHP version, extensions, and recent code changes.
- Database errors: confirm database credentials, service availability, and user permissions.
- SSL warnings: review certificate coverage, DNS, and mixed-content links.
Use cPanel Metrics > Errors and the application log for details. Do not repeatedly change DNS or delete files while troubleshooting. Send support the domain, error text, timestamp, and safe screenshots; never send passwords or API keys.
