When you start Remote Desktop Connection, press Options, select the Programs tab, and check the Start the following program on connection box, an unexpected program starts.

This behavior may occur if you fail to encapsulate the program path in quotation marks if it contains one or more space characters.

To workaround this behavior, use quotation marks to encapsulate the path in the Program path and file name box, like:

"C:\Program Files\Windows NT\Pinball\Pinball.exe"