HTTP 200 OK vs 511 Network Authentication Required
HTTP 200 (OK) is a 2xx Success response, while 511 (Network Authentication Required) is a 5xx Server Error response. 200 indicates that the request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only. In contrast, 511 means that the client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
説明
The request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only.
このコードが表示される場合
The most common HTTP response — indicates the request was processed successfully.
解決方法
No fix needed. The request succeeded as expected.
説明
The client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
このコードが表示される場合
When connecting to WiFi that requires login (airport, hotel, coffee shop).
解決方法
Open a browser and complete the captive portal login process.
主な違い
200 is a 2xx Success response, while 511 is a 5xx Server Error response.
HTTP 200: The request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only.
HTTP 511: The client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
You encounter 200 when the most common HTTP response — indicates the request was processed successfully.
You encounter 511 when when connecting to WiFi that requires login (airport, hotel, coffee shop).
どちらをいつ使うか
For 200 (OK): No fix needed. The request succeeded as expected. For 511 (Network Authentication Required): Open a browser and complete the captive portal login process.