~/devtools / http-status / 426
tool::http-status-detail

426 Upgrade Required

The client should switch to a different protocol.

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Status Code
426
Name
Upgrade Required
Category
4xx

Related Status Codes

400Bad RequestThe server could not understand the request due to invalid syntax.→401UnauthorizedAuthentication is required and has failed or not been provided.→402Payment RequiredReserved for future use; some services use it for payment walls.→403ForbiddenThe server refuses to fulfill the request (authenticated but unauthorized).→404Not FoundThe requested resource could not be found.→
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