LPT Port Mapping maps the RAW LPTx: port into the Citrix Session - so you would add a printer and connect to the mapped port or print directly to it from DOS Client printer mapping - prints through the client spooler subsystem not directly to the port. From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Matthew McComas Sent: Tuesday, August 21, 2007 3:43 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] mappings in citrix connection configuration? So, this is probably a stupid question, but here goes...it's been a long time since I took the basic Citrix Admin class and test... What's the difference between these two settings? "disable windows client printer mapping" "disable client LPT port mapping" My guess is that the LPT port mapping will enable client printer mapping if they have a locally attached printer from the client they are connecting from, and that the windows client printer mapping is if they have printer mappings to network printers...am I close? I'm getting a lot of cdm (event ID 39) in my event logs on one server, so I'm trying to track it down. Thanks, MM