I have a recurring issue on my Windows XP Professional machine. If I change my password, the next day it is invalid. Is it possible that something is resetting it overnight. I'm in a private network. Are there some services running that I could look at? Event Type: Failure Audit Event Source: Security Event Category: Logon/Logoff Event ID: 529 Date: 12/11/2009 Time: 09:04:49 User: NT AUTHORITY\SYSTEM Computer: MYPC Description: Logon Failure: Reason: Unknown user name or bad password User Name: me Domain: MyCompanyDomain Logon Type: 7 Logon Process: User32 Authentication Package: Negotiate Workstation Name: MyPC For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. http://learnerps-dotnet.blogspot.com/1 person needs an answerI do too