Event ID - 30

Event Id30
SourceW3SVC
DescriptionThe server was unable to read the file <file>. The file does not exist.
Event InformationAccording to the news group post: It is common practice to remove the iishelp files for security reasons. This may be cause problems if you do not change the default errors. When the web server can not find a page requested by the user it will give a "404-Page not found" message, but if you removed these files and haven not created any custom files then this error will get written to the event log. What has worked for me in the past is to copy the actual file that the error is reporting from another server.
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