2xx-Success
This type of status code indicates that the server successfully accepted the client request.
200-OK. The client request was successful.
201-created.
202-accepted.
203-Non-authoritative information.
204-no content.
205-Reset the content.
206-Partial content.
3xx- Redirection
The client browser must take more action to implement the request. For example, the browser might have to request a different page on the server, or repeat the request through a proxy server.
301-The object has been permanently moved, that is, permanent redirection.
302-The object has been temporarily moved.
304-not modified.
307-Temporary redirection.
4xx-Client Error
An error occurred and the client appears to be having problems. For example, a client requests a page that does not exist, and the client does not provide valid authentication information. 400-Bad request.
401-access is denied. IIS defines a number of different 401 errors, which indicate a more specific cause of the error. These specific error codes are displayed in the browser, but are not displayed in the IIS log:
401.1-Login failed.
401.2-Server configuration caused logon failure.
401.3-not authorized due to ACL restrictions on resources.
401.4-Filter authorization failed.
401.5-isapi/cgi application authorization failed.
401.7– access is denied by the URL authorization policy on the Web server. This error code is dedicated to IIS6.0.
403-Forbidden: IIS defines a number of different 403 errors that indicate a more specific cause of the error:
5xx-Server Error
the server could not complete the request because it encountered an error.
500-Internal server error.
the 500.12-application is busy restarting on the Web server.
The 500.13-web server is too busy.
500.15-Direct request Global.asa is not allowed.
500.16–unc authorization credentials are incorrect. This error code is dedicated to IIS6.0.
The 500.18–url authorization store cannot be opened. This error code is dedicated to IIS6.0.
500.100-Internal ASP error.
501-The header value specifies the configuration that is not implemented.
An invalid response was received when the 502-web server was used as a gateway or proxy server.
The 502.1-cgi application timed out.
502.2-cgi Application error. Application.
503-The service is not available. This error code is dedicated to IIS6.0.
504-The gateway timed out.
505-http version is not supported.
Common server-side return codes
