Answers:
找到答案,可以通过注册表更改(永久)更改:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\ImmersiveShell\Launcher
DesktopAppsAlwaysLaunchNewInstance DWORD
0 = Disable
1 = Enable
http://www.eightforums.com/tutorials/49581-desktop-apps-always-open-new-instance-start-screen.html