Why is Cloudflare's human verification failing?

Cloudflare's 'Verify You Are Human' check uses various methods, including CAPTCHAs, browser fingerprinting, and behavioral analysis. Failures can occur due to browser issues (e.g., outdated plugins, conflicting extensions), network problems (e.g., firewall blocking), or the complexity of the challenge itself. The solution involves troubleshooting your browser and network, ensuring no conflicting extensions are active, and potentially trying a different browser or device.