Cloudflare Error 1010: The Owner of This Website Has Banned Your Access Based on Your Browser's Signature
Error 1010 is triggered by Cloudflare's Browser Integrity Check (BIC) feature. The site owner has enabled BIC, which examines HTTP headers — particularly the User-Agent — for known patterns associated with bots, scrapers, and automated tools. If the request's headers match bot signatures or are missing a User-Agent entirely, Cloudflare returns 1010. Legitimate browsers should not trigger this error under normal circumstances.
Status
Error 1010: The Owner of This Website Has Banned Your Access Based on Your Browser's SignatureExample
GET /articles HTTP/1.1
Host: www.example.com
User-Agent: python-requests/2.28.0
Accept: text/htmlHTTP/1.1 403 Forbidden
Server: cloudflare
CF-RAY: 7d6e7f8a9b0c1234-CDG
Content-Type: text/html
<!doctype html>
<html>
<head>
<title>www.example.com | Error 1010</title>
</head>
<body>
<h1>Error 1010: The owner of this website has banned your access based on your browser signature</h1>
<p>Your browser signature was flagged. Please use a standard web browser to access this site.</p>
</body>
</html>How to Troubleshoot
Use a standard web browser
Access the site using a standard browser (Chrome, Firefox, Safari, Edge) without unusual extensions that modify HTTP headers.
Set a proper User-Agent in scripts
If running a legitimate script or tool, set a realistic User-Agent header in your HTTP requests.
curl -H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36" https://example.com
Site owner: Adjust Browser Integrity Check
If you own the site and need to allow certain automated access, create a WAF exception rule for specific User-Agents or IP ranges, or disable BIC for certain paths.
Common Causes
Request sent by a bot or automated script
highThe HTTP client sending the request has a User-Agent that matches known bot or scraper patterns (e.g., Python-urllib, curl, or custom automation agents).
Missing or empty User-Agent header
mediumThe request has no User-Agent header at all. Legitimate browsers always include one, so its absence triggers BIC.
Modified browser or privacy extension
lowCertain privacy extensions or browser configurations strip or alter the User-Agent header in ways that resemble bot traffic.
Related Error Codes
Access Denied
Access was denied based on the visitor's activity being flagged as malicious by Cloudflare.
Access Denied by Firewall Rule
The request was blocked by a Cloudflare WAF or firewall rule configured by the site owner.
Access Denied: Your IP Has Been Banned
The site owner has blocked the visitor's IP address using Cloudflare's firewall tools.
Frequently Asked Questions
This reference was compiled from official RFCs, protocol specifications, and hands-on troubleshooting experience. AI tools were used primarily for formatting and organizing the content on the page.