ChanderBatra

I am not sure about Microsoft log parser. I'll check if it can parse .log file i.e. IIS log file which can be found in %systemroot%\system32\LogFiles\W3SVC1 directory. I tried Managengine Event Log Analyzer to produce a report of IIS logs but that does not give desired output. I was known of some software which can scan text file (log file) for particular word and highlight all the lines in the text file having that word. Like in your case you can search for a user account name or LogonFrm.asp I have forgotten the name of that software. I'll search and let you know if I find something useful.

You can get all the informaion from IIS logs. For more information you can google "Using OWA logs to make your civil case" Actually it is difficult to manually go through log file to trace particular user account. I am also looking for a software which can parse IIS logs and give result in form of Report.