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HTTP Status Code 506

Status code 506 is a less common error code that indicates a server-side configuration issue. It specifically relates to a feature called Content Negotiation.

Content Negotiation is a process where a server offers multiple versions of a resource, like a webpage, and allows the client (like your web browser) to choose the most suitable one. This can be based on factors like the device being used or the user's preferences.

A 506 error occurs when the server picks a variant (version) of the resource that is itself configured to perform content negotiation. This creates a loop and confuses the system. It's essentially like trying to use a remote control to turn on the remote control itself.

In simpler terms, the server is trying to be too clever and accidentally trips itself up.

Other 5xx Status Codes

506 Variant Also Negotiates