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501 Not Implemented

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The HTTP 501 Not Implemented server error response code indicates that the request method is not supported by the server and cannot be handled. The only methods that servers are required to support (and therefore that must not return this code) are GET and HEAD.

Note that a 501 error is not something you can fix, but requires a fix by the web server you are trying to access.

A 501 response is cacheable by default.

Status

501 Not Implemented

Specifications

Specification Title
RFC 7231, section 6.6.2: 501 Not Implemented Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

Browser compatibility

Feature Chrome Edge Firefox Internet Explorer Opera Safari Servo
Basic Support(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)
Feature Android Chrome for Android Edge Mobile Firefox for Android IE Mobile Opera Mobile Safari Mobile
Basic Support(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)

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Метки: 
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