HTTP 451 Unavailable For Legal Reasons Error - Meaning & Fix

The HTTP 451 error code appears when a requested resource is legally unavailable. This typically occurs due to restrictions imposed by legal authorities. The content is blocked to comply with legal demands.

Main causes

  • Government-imposed censorship or restrictions on specific types of content.

  • Legal injunctions that specifically prevent certain information from being accessible.

  • Copyright or intellectual property rights enforcement.

  • Compliance with local laws prohibiting the display or distribution of certain content.

# Request example 
curl -X GET https://sandbox.oxylabs.io/ -H 'Accept: text/html' -H 'Accept-Encoding: gzip, deflate' -H 'User-Agent: Chrome/91.0.4472.124'

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Common fixes

  • Review and optimize the frequency of requests to ensure they are spread out evenly over time.

  • Implement exponential backoff in your request retry strategy to reduce the likelihood of hitting the rate limit.

  • Increase the rate limit by upgrading your service plan or negotiating higher limits with the service provider.

  • Utilize caching mechanisms to reduce the number of requests made to the server.

# Response example 
HTTP/1.1 451 Unavailable For Legal Reasons
Content-Type: text/html; charset=UTF-8
Content-Encoding: gzip





Unavailable For Legal Reasons


451 Unavailable For Legal Reasons

This content is unavailable due to legal reasons.

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