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Last updated Nov 19, 2024

What is HTTP Status Code 426? - Upgrade Required

Benjamin Bouchet
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The HTTP Status Code 426 means that the client should switch to a different protocol such as TLS/1.0, as given in the Upgrade header field.‍

Additional Links and Codes Related to Status Code What is HTTP Status Code 426?

407
Proxy Authentication Required
300
Multiple Choices
403
Forbidden
201
Created
303
See Other
307
Temporary Redirect
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