Install Following registry patch to update the Local Machine to not bring up Network Printers.
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Terminal Server Client\Default\AddIns\RDPDR]
"FilterQueueType"=dword:00000007
Based on the FilterQueueType the RD Client will attempt to have the server auto-create local client printers that have certain port names.
Below are the definitions:
1 All ports that begin with LPT
2 All ports that begin with COM
3 All ports that begin with LPT or COM
4 All ports that begin with USB
5 All ports that begin with LPT or USB
6 All ports that begin with COM or USB
7 All ports that begin with LPT, COM, or USB
To remove the filter just remove the entry