SCoreShell - Windows Server Core PowerShell prompt at login with auto-logoff on exit

SCoreShell.cs

using System;
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;

namespace SCoreShell
{

    /// <summary>
    /// This application's sole purpose in life is to sit in for the default "shell" on a
    /// Windows Server Core installation and launch PowerShell instead of cmd.exe.
    /// When the PowerShell instance is exited, the session is logged off in order to
    /// prevent a shell-less session from being abandoned on the server.
    /// </summary>
    /// <remarks>
    /// To register this program as the default shell for Windows Server Core, you must
    /// point the following registry key to the location of ScoreShell.exe:
    /// HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell (REG_SZ)
    /// </remarks>
    public static class Program
    {

        public static void Main( )
        {

            string pathSystem32 = Environment.GetFolderPath( Environment.SpecialFolder.System );
            string pathPowerShell = Path.Combine( pathSystem32, "WindowsPowerShell", "v1.0", "powershell.exe" );

            var psProcess = Process.Start( pathPowerShell );
            psProcess.WaitForExit( );

            ExitWindowsEx( 0x0, 0x0 );

        }

        [DllImport( "user32.dll" )]
        private static extern bool ExitWindowsEx( uint uFlags, uint dwReason ); 

    }


}