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511

Network Authentication Required

Server Error
RFC 6585

The client needs to authenticate to gain network access.

Detailed Information

The 511 status code indicates that the client needs to authenticate to gain network access. This is often returned when a client attempts to access a resource that requires authentication.

Common Examples

  • API requests with network authentication required
  • Web page requests with network authentication required

Common Uses

  • API requests with network authentication required
  • Web page requests with network authentication required

Best Practices

  • Use when the client needs to authenticate to gain network access
  • Include a detailed error message
  • Ensure proper authentication and authorization mechanisms are in place

Quick Actions

Category Information

Server Error

The server failed to fulfill an apparently valid request

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HTTP Status Codes Reference - Complete List with Descriptions