The following procedure allows you to verify (by enabling URI queries in IIS) when a user is logged in, if that login was successful, and when the user logged out.
Note: IIS log files are stored in the following directory: %WINDOWS%\System32\LogFiles\
How to place user login messages in the IIS logs:
Note: If you need more information on enabling logging for IIS, read the following KB: http://support.ipswitch.com/kb/IM-20051206-DM01.htm
Examples of what the user data will look like in the IIS logs:
14:55:27 127.0.0.1 POST /cypress/login.aspx Login+Attempt:+[Marc]Login+Successful:+[Marc]+Language+Used:+en-US 302
14:57:01 127.0.0.1 POST /cypress/Login.aspx Login+Error:+[Marc]+Failed+to+authorize+user. 200
15:23:31 127.0.0.1 GET /cypress/Logout.aspx Logout:+[Marc] 200