Output occurs before installation begins.
Unexpected ‘Headers Already Sent’ Error
Key Points: Output occurs before installation begins.
You haven’t even clicked anything, and you get ‘Headers already sent’ — sounds like a coding ghost in the machine.
🔍 Common Triggers
- Configuration mistakes specific to this issue
- Server settings not aligned with WordPress needs
- Missing files or incorrect paths
🛠️ How to Solve It
- Review your installation environment (PHP, MySQL, permissions, file paths)
- Follow any specific error messages or debug logs
- Try installing on a fresh test environment to isolate the error
💡 Tips
- Double-check every detail — installation problems are often simple misconfigurations
- Use host-provided tools (cPanel, terminal, logs) to diagnose deeper server issues
- Keep backups, even at the installation stage, especially if reusing databases or files