Cloudflare, on a browser-integrity check.

Cloudflare error 1010 — Browser signature banned

Cloudflare decided your client is automation. This is about the signature your browser presents, not about your address — which is why it is the one Cloudflare error that a new IP will not touch.

A proxy does not fix this. A new IP does not change your browser signature. This is the code to remember when someone tells you to buy more proxies: 1010 follows you to every one of them.

Why it happens

Headless Chrome with its default flags, which announce themselves.

navigator.webdriver left true, or an automation-driver artefact left in the page.

A TLS or HTTP/2 fingerprint that does not match the User-Agent being claimed.

How to fix it

  1. Use a browser stack that patches the automation markers rather than a bare headless launch.
  2. Make the fingerprint consistent: a Chrome User-Agent with a Python TLS handshake is a contradiction, and it is detectable.
  3. Consider whether you need a browser at all — a plain HTTP client with a matching fingerprint is often less detectable than a badly hidden browser.

FAQ

What does 1010 mean?›
Cloudflare decided your client is automation. This is about the signature your browser presents, not about your address — which is why it is the one Cloudflare error that a new IP will not touch. Cloudflare, on a browser-integrity check.
Why am I getting 1010?›
Headless Chrome with its default flags, which announce themselves. navigator.webdriver left true, or an automation-driver artefact left in the page. A TLS or HTTP/2 fingerprint that does not match the User-Agent being claimed.
How do I fix 1010?›
Use a browser stack that patches the automation markers rather than a bare headless launch. Make the fingerprint consistent: a Chrome User-Agent with a Python TLS handshake is a contradiction, and it is detectable. Consider whether you need a browser at all — a plain HTTP client with a matching fingerprint is often less detectable than a badly hidden browser.
Will a proxy fix 1010?›
A new IP does not change your browser signature. This is the code to remember when someone tells you to buy more proxies: 1010 follows you to every one of them.

Going deeper

Other errors