HTTP 407 Proxy Authentication Required vs 414 URI Too Long
Both HTTP 407 (Proxy Authentication Required) and 414 (URI Too Long) belong to the 4xx Client Error category. 407 indicates that the client must first authenticate itself with the proxy. Meanwhile, 414 means that the URI provided was too long for the server to process.
Description
The client must first authenticate itself with the proxy.
When You See It
When accessing the internet through a corporate proxy that requires authentication.
How to Fix
Configure proxy credentials in your HTTP client or browser settings.
Description
The URI provided was too long for the server to process.
When You See It
When query strings are extremely long or when accidentally sending a request body in the URL.
How to Fix
Shorten the URL. Move long parameters to the request body using POST instead of GET.
Key Differences
HTTP 407: The client must first authenticate itself with the proxy.
HTTP 414: The URI provided was too long for the server to process.
You encounter 407 when when accessing the internet through a corporate proxy that requires authentication.
You encounter 414 when when query strings are extremely long or when accidentally sending a request body in the URL.
When to Use Which
For 407 (Proxy Authentication Required): Configure proxy credentials in your HTTP client or browser settings. For 414 (URI Too Long): Shorten the URL. Move long parameters to the request body using POST instead of GET.