The HTTP 401 Unauthorized
client error status response code indicates that the request has not been applied because it lacks valid authentication credentials for the target resource.
This status is sent with a WWW-Authenticate
header that contains information on how to authorize correctly.
This status is similar to 403
, but in this case, authentication is possible.
Status
401 Unauthorized
Example response
HTTP/1.1 401 Unauthorized Date: Wed, 21 Oct 2015 07:28:00 GMT WWW-Authenticate: Basic realm="Access to staging site"
Specifications
Specification | Title |
---|---|
RFC 7235, section 3.1: 401 Unauthorized | HTTP/1.1: Authentication |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
401 | Chrome Full support Yes | Edge Full support 12 | Firefox Full support Yes | IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support