Disable add new printer:

This option once enabled disables the addition of new printers to the computer. 

Open your registry and find or create the key below. 

Create a new DWORD value, or modify the existing value, called "NoAddPrinter" and set it according to the value data below. 

Exit your registry, you may need to restart or log out of Windows for the change to take effect. 

 
     
  (Default) REG_SZ (value not set)  
  NoAddPrinter REG_DWORD 0x00000001 (1)  
  [HKEY_LOCAL_MACHINE]\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
 


Registry Settings 
System Key: [HKEY_LOCAL_MACHINE]\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

Value Name: NoAddPrinter
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = disabled, 1 = enabled)