Checking the HTTP Error Log

Applies To: Windows Server 2003, Windows Server 2003 with SP1

In IIS 6.0, HTTP.sys logs errors in the HTTP error log. The HTTP error log is the first place you should look when IIS returns an HTTP 503–Service Unavailable error, for example. The HTTP error log is located in systemroot\System32\LogFiles\HTTPERR.

For information about HTTP errors, see HTTP Status Codes in IIS 6.0.