Getting logged-on username from a service

Question

I have a service that I had to log on to the local admin to install. The pupose of this service to log when a user is logging in or out to record their username. I finally f

Answer 1

Try to change the Account() method inserting the sessionId parameter and passing the changeDescription.SessionId to the method WTSQueryUserToken

public static string Account(uint sessionId)
{
     IntPtr token = IntPtr.Zero;
     String account = String.Empty;
     if (WTSQueryUserToken(sessionId, out token))
     { 
     ...
     ...

p.s.: Run your service with LocalSystem account