I am not able to find netlogon on Windows XP PC. I am having a SP2 edition here. I am performing some updates and get stuck with an error message. Once the updates were installed I restarted the pc. The error that I got on my screen is "Unable to log you on because the netlogon service is not running on this machine". What does this error means. I am able to boot in safe mode and things look to be working fine. But in the normal mode I am getting the problem.