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Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.

C:\Users\Administrator>reg query 'HKLM\SYSTEM\CurrentControlSet\Control\Terminal
 Server\WinStations\RDP-Tcp'
ERROR: Invalid key name.
Type "REG QUERY /?" for usage.

C:\Users\Administrator>reg.exe query HKLM\SYSTEM\CurrentControlSet\Control\Termi
nal Server\WinStations\RDP-Tcp
ERROR: Invalid syntax.
Type "REG QUERY /?" for usage.

C:\Users\Administrator>reg.exe query HKLM\SYSTEM\CurrentControlSet\Control\Termi
nal Server\WinStations\RDP-Tcp /v PortNumber
ERROR: Invalid syntax.
Type "REG QUERY /?" for usage.

C:\Users\Administrator>reg.exe query HKLM\SYSTEM\CurrentControlSet\Control\Termi
nal520Server
ERROR: The system was unable to find the specified registry key or value.

C:\Users\Administrator>reg.exe query HKLM\SYSTEM\CurrentControlSet\Control\Termi
na%20Server
ERROR: The system was unable to find the specified registry key or value.

C:\Users\Administrator>reg.exe query HKLM

HKEY_LOCAL_MACHINE\BCD00000000
HKEY_LOCAL_MACHINE\HARDWARE
HKEY_LOCAL_MACHINE\SAM
HKEY_LOCAL_MACHINE\SECURITY
HKEY_LOCAL_MACHINE\SOFTWARE
HKEY_LOCAL_MACHINE\SYSTEM

C:\Users\Administrator>