Frequently Asked Questions

Outline

1. Account and Domain

• Cannot add domain

  • Domain verification failed
  • NS record issues
  • Domain status checks

• Name server switch

  • Propagation time
  • Site unreachable after switch
  • How to revert to original DNS

2. DNS

• Records not taking effect

  • Validate record config
  • TTL settings
  • Propagation checks

• Email delivery

  • MX records
  • Sending failures
  • SPF/DKIM setup

3. SSL/TLS

• Certificate not active

  • Status checks
  • Domain validation issues
  • Issuance time

• Mixed content warnings

  • HTTP/HTTPS mix
  • How to fix

• Certificate expired

  • Auto-renewal checks
  • Manual renew

4. Caching

• Cache misses

  • Cache level checks
  • Page rules
  • Purging cache

• Stale after purge

  • Browser cache
  • CDN cache layers
  • Hard refresh

5. Performance

• Slow loads

  • Edge location choice
  • Cache strategy
  • Compression settings

• CDN impact minimal

  • Check proxy status
  • Cache configuration
  • Performance analysis

6. Security Features

• WAF false positives

  • Review WAF events
  • Add bypass rules
  • Adjust sensitivity

• Rate limiting issues

  • Threshold tuning
  • False positives
  • Allow lists

7. Workers

• Worker execution failed

  • Inspect logs
  • Debug code
  • Execution time limits

• Deployment issues

  • Failed deploys
  • Versioning
  • Environment variables

8. Pages

• Build failures

  • Check build logs
  • Env var config
  • Node.js version

• Custom domain issues

  • Binding failed
  • SSL certificates
  • DNS records

9. Billing and Plans

• Costs

  • Billing details
  • Free plan limits
  • Upgrading plans

• Plan selection

  • How to choose
  • Feature comparison
  • Upgrade guidance

10. Support Resources

• Official docs

  • Cloudflare docs
  • Community forums
  • Knowledge base

• Getting help

  • Open a ticket
  • Community support
  • Support channels

11. Summary

• Quick reference to FAQs
• Troubleshooting flow