What does internal server error mean – Quickwork Support Center

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When a web browser sends a request to a server, the server responds with a specific status code. Sometimes, a webpage or website encounters an error without a clear root cause. In such situations, the server returns an HTTP 500 error, commonly referred to as an internal server error.

Among the various status codes, 5xx codes indicate server-side issues. The leading digit "5" signifies that the error originates from the server. These codes, typically ranging from 500 to 510, indicate that the server was unable to complete the request due to an internal error. Below is a list of common 5xx errors:

Error	Message	Description
500	Internal server error	When a server encounters an unexpected condition.
501	Not implemented	When an HTTP method sent to a server is not supported. This is a rare situation and is caused when a web server is outdated.
502	Bad gateway	When servers are configured improperly, when there is poor IP communication between back-end computers, when the client's server is overloaded, or when a firewall is functioning improperly.
503	Service unavailable	When a server is unable to handle requests due to overload or a server is closed for maintenance.
504	Gateway timeout	When a server does not receive responses in a timely manner from other servers in a chain. This might be due to slow communication amongst the chain of computers.
505	HTTP version not supported	When a server refuses to support a specific HTTP protocol defined by the client computer.
506	Variant also negotiates	When a server is configured improperly.
507	Insufficient storage	When a server is out of free memory and fails to allocate a set of free resources to run a requested service.
509	Bandwidth limit exceeded	When a server's bandwidth limit set by the admin is reached.
510	Not extended	When a server does not support the extension attached to an HTTP request.

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