title: Does the same windows service run per-logged in user?
body: <p>I'm building a Windows service that performs different actions based on which Windows user is logged in. If I install my service under one user, and set it to start-up, will a separate instance of it run for each user that logs in, continuing to run, even if more than one user is currently logged in?</p>
  
  <p>This is the behavior I would like, but if it is not possible, I'll have to plan for something else.</p>
  
  <p>And in general, is each user log-in session like its own, independent environment? In other words, if I have a driver installed that interacts with my service via named pipes, will the piped message sent from the currently logged in user's driver be also be received by the other service instances running in under other logged-in users (assuming they do run separate instances, as asked above)? Or are they completely separate environments with their own drivers/kernal instances?</p>