HTTP 511 Network Authentication Required

text

HTTP/1.1 511 Network Authentication Required

Explanation

Typically indicates network-level auth, such as a captive portal.

Learn the surrounding workflow

Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Same sheet · prioritizing Codes 511-511

Generic unexpected server failure

Open In sheettext3 tag match

Method or capability not implemented

Open In sheettext3 tag match

Upstream sent invalid response

Open In sheettext3 tag match

Temporarily unavailable or overloaded

Open In sheettext3 tag match

Upstream did not respond in time

Open In sheettext3 tag match

HTTP version unsupported

Open In sheettext3 tag match