401 Unauthorized

Summary

401 Unauthorized is a HTTP status code^[1]. It draws 2 Wikipedia views per month (http_status_code category, ranking #10 of 12).^[2]

Key Facts

• 401 Unauthorized's instance of is recorded as HTTP status code^[3].
• 401 Unauthorized's follows is recorded as 400 Bad Request^[4].
• 401 Unauthorized's followed by is recorded as 402 Payment Required^[5].
• 401 Unauthorized's part of the series is recorded as HTTP status code^[6].
• 401 Unauthorized's described by source is recorded as RFC 2616: Hypertext Transfer Protocol -- HTTP/1.1^[7].
• 401 Unauthorized's described by source is recorded as RFC 7231: Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content^[8].
• 401 Unauthorized's described by source is recorded as RFC 7235: Hypertext Transfer Protocol (HTTP/1.1): Authentication^[9].
• 401 Unauthorized's native label is recorded as Unauthorized^[10].
• 401 Unauthorized's code is recorded as 401^[11].
• 401 Unauthorized's Mozilla Developer Network article is recorded as Web/HTTP/Status/401^[12].

Why It Matters

401 Unauthorized draws 2 Wikipedia views per month (http_status_code category, ranking #10 of 12).^[2]