HTTP 410 Gone vs 426 Upgrade Required
Both HTTP 410 (Gone) and 426 (Upgrade Required) belong to the 4xx Client Error category. 410 indicates that the resource is permanently gone and will not be available again. Unlike 404, this is intentional and permanent. Meanwhile, 426 means that the server refuses to perform the request using the current protocol but might after the client upgrades to a different protocol.
Description
The resource is permanently gone and will not be available again. Unlike 404, this is intentional and permanent.
When You See It
When a resource has been deliberately removed and should be de-indexed by search engines.
How to Fix
Remove references to this URL. Search engines will de-index the page.
Description
The server refuses to perform the request using the current protocol but might after the client upgrades to a different protocol.
When You See It
When a server requires HTTPS or a newer protocol version.
How to Fix
Switch to the protocol specified in the Upgrade response header.
Key Differences
HTTP 410: The resource is permanently gone and will not be available again. Unlike 404, this is intentional and permanent.
HTTP 426: The server refuses to perform the request using the current protocol but might after the client upgrades to a different protocol.
You encounter 410 when when a resource has been deliberately removed and should be de-indexed by search engines.
You encounter 426 when when a server requires HTTPS or a newer protocol version.
When to Use Which
For 410 (Gone): Remove references to this URL. Search engines will de-index the page. For 426 (Upgrade Required): Switch to the protocol specified in the Upgrade response header.