Remote Desktop Shadow Mode allows administrators to remotely view and/or interact with the user’s desktop.
To connect shadow session, /prompt option is needed because mstsc.exe tries to connect to client with the current user credential.
However, with /prompt option, mstsc.exe always requests a user credential to connect and it cannot be bypassed with saved one.
This credential window is not a standard WIN32 window but a XAML UI, thus it can be manipulated via UI Automation.
