Error 1012 is a general access denial that occurs when Cloudflare determines the visitor's request is unwanted based on the site owner's security settings. This can be triggered by various Cloudflare security features including the WAF, Bot Management, or custom firewall rules. Unlike the 1006/1007/1008 errors which are specifically IP-based blocks, 1012 can be triggered by a combination of signals including request patterns, browser fingerprinting, and behavior analysis.
Cloudflare's bot detection determined the request is automated or suspicious based on behavioral signals, TLS fingerprinting, or other heuristics.
The request URL, headers, or body matched a WAF rule configured by the site owner to block certain patterns.
The visitor was presented with a Cloudflare challenge (CAPTCHA, JS challenge) but the response indicated it was not a legitimate browser.
Clear all cookies for the site and reload. Stale or corrupted Cloudflare challenge tokens can cause persistent blocks.
Ad blockers, privacy extensions, or script blockers may interfere with Cloudflare's challenge pages, preventing successful verification.
Test with a clean browser profile to determine if the issue is related to your browser configuration.
Check Security > Events in the Cloudflare dashboard to see which rule triggered the block and adjust if needed.
The site owner's Browser Integrity Check blocked the visitor based on their User-Agent or browser signature.
The request was blocked by a Cloudflare WAF or firewall rule configured by the site owner.
The site owner has blocked the visitor's IP address using Cloudflare's firewall tools.