If I input only an account name, without specifying the machine name, e.g. "forTest", not "computerName\forTest", the RDP client does not connect to the target machine.
After I append the "computerName\", it manages to initiate a RDP session.
The RDP client is launched by system service in session 0 as the "LocalSystem" account, interactively.
In what circumstances is inputting the computerName a must? What is a always safe way to specifying the user name in RDP client? Is it safe to always use "computerName\accountName"?