12/31/2022 0 Comments Vista installer code![]() ![]() All Windows Services run within Session0, and Session0 is non-interactive. There exists a special Session in Vista that has a Session ID of 0. If we were to call that method right now, it would return a value of 1 because that is the Session ID of the User Pero. The Win32 API contains a function called WTSGetActiveConsoleSessionId() which returns the Session ID of the User currently in control of the Physical Console. However, since Users can be impersonated, it is more appropriate to reference the currently active Session rather than the currently active User. Since Pero is in control of the keyboard, monitor, and mouse, he is considered the currently active User. The Physical Console consists of the monitor, keyboard, and mouse. In this case, I mean the Physical Console. Notice, I indicated that the User named Pero is in control of the Console. You can view the Session ID assigned to each logged on User from the Users tab in Task Manager: The next User to log on will be assigned a Session ID of 2. In Windows Vista, the first User to log on to the computer is assigned a Session ID of 1 by the OS. ![]() ![]() When you log on, the system assigns you a unique Session ID. Let’s start from the beginning… you have just booted up your computer and are about to log on. The article closes with a section discussing how the code could be extended for more practical purposes. The article shows how to create a service called LoaderService that serves as an application loader and whose purpose is to launch, at boot time, a command prompt that runs as an Administrator. An interactive process is one that is capable of displaying a UI on the desktop. The purpose of this article is to illustrate how to correctly launch an interactive process from a service in Windows Vista, and also to demonstrate how to launch that process with full Administrator privileges. ![]()
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