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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
Related Status Codes
3 similar
500
Internal Server Error
The server has encountered a situation it does not know how to handle.
501
Not Implemented
The server does not support the functionality required to fulfill the request.
502
Bad Gateway
The server, while acting as a gateway or proxy, received an invalid response from the upstream server.
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