Types of Status Codes in IIS

 In IIS (Internet Information Services), HTTP status codes are used to indicate the outcome of a web request. These codes provide information about the success or failure of the request and help in troubleshooting and diagnosing issues. Here are some of the common HTTP status codes you may encounter in IIS:

Informational 1xx:

100 Continue: The server acknowledges that it has received the initial part of the request and expects the client to continue sending the remaining parts.

Success 2xx:

200 OK: The request was successful, and the server is returning the requested data.

201 Created: The request was successful, and a new resource was created as a result.

204 No Content: The request was successful, but there is no content to return.

Redirection 3xx:

301 Moved Permanently: The requested resource has been permanently moved to a new location.

302 Found: The requested resource has been temporarily moved to a different location.

304 Not Modified: The requested resource has not been modified since the last request.

Client Error 4xx:

400 Bad Request: The server cannot understand the request due to invalid syntax or other client-side errors.

401 Unauthorized: The request requires authentication, and the client needs to provide valid credentials.

403 Forbidden: The server understands the request but refuses to fulfill it due to access restrictions.

Server Error 5xx:

500 Internal Server Error: A generic error message indicating an internal server error.

502 Bad Gateway: The server acting as a gateway or proxy received an invalid response from an upstream server.

503 Service Unavailable: The server is currently unavailable and cannot handle the request.

These are just a few examples of the HTTP status codes you may encounter in IIS. There are many more status codes that provide specific information about the request and response. It's important to understand these status codes to troubleshoot and diagnose web-related issues effectively.

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