Nelson1965 wrote: I would like the windows I open not to appear in the Task Manager The dream of malware authors everywhere! No, you can't hide your application from the task manager. At least not without writing and installing a "rootkit", which will get your application banned with extreme prejudice. Nelson1965 wrote: when I log out to turn off the computer it tells me that there are open windows You don't need to hide your application from the task manager to avoid that. Any normal application will shut down when the user logs out. If you need to do something special when that happens, subscribe to the Application.SessionEnding event[^]. "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer