HTTP 404 Not Found vs 506 Variant Also Negotiates
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HTTP 404 (Not Found) is a 4xx Client Error response, while 506 (Variant Also Negotiates) is a 5xx Server Error response. 404 indicates that the server cannot find the requested resource. The URL may be wrong, the resource may have been deleted, or it may never have existed. In contrast, 506 means that the server has an internal configuration error: the chosen variant resource is configured to engage in content negotiation itself.
Description
The server cannot find the requested resource. The URL may be wrong, the resource may have been deleted, or it may never have existed.
When You See It
When a URL is mistyped, a page has been deleted, or an API endpoint doesn't exist.
How to Fix
Verify the URL is correct. Check for typos, case sensitivity, and trailing slashes.
Description
The server has an internal configuration error: the chosen variant resource is configured to engage in content negotiation itself.
When You See It
Rare. Indicates a misconfigured server-side content negotiation loop.
How to Fix
Fix the server's content negotiation configuration.
Key Differences
404 is a 4xx Client Error response, while 506 is a 5xx Server Error response.
HTTP 404: The server cannot find the requested resource. The URL may be wrong, the resource may have been deleted, or it may never have existed.
HTTP 506: The server has an internal configuration error: the chosen variant resource is configured to engage in content negotiation itself.
You encounter 404 when when a URL is mistyped, a page has been deleted, or an API endpoint doesn't exist.
You encounter 506 when rare. Indicates a misconfigured server-side content negotiation loop.
When to Use Which
For 404 (Not Found): Verify the URL is correct. Check for typos, case sensitivity, and trailing slashes. For 506 (Variant Also Negotiates): Fix the server's content negotiation configuration.