No you can't change it without reinstalling. However before you do that I would check your Citrix Connection configuration on that server to make sure you don't have the 'Prompt for password' option checked. Chris _____ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Taylor, George Sent: Thursday, September 28, 2006 4:50 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] Passthru Authentication I recently upgraded to Prsentation Server 4.0 and Web Interface. I found that the Client Authentication Methods on the Web Interface defaulted to only "Prompt User". This changed all of the PNAgents that are out there. I found the solution and was able to fix all except one issue, the PNAgent on one server that I publish a desktop from. It changed to Prompt User, I go to properties, change it to pass-thru and choose Refresh Applications. I asks for credentials and when I look at properties it's back to prompt user. I have a feeling it has something to do with the fact the "default" for that presentation server was changed. I know your asked if you want to allow passthru when you install the server, but is there any where you can change that once the server has been installed? Thanks for any help, George Taylor Systems Programmer Regional Health Inc. ***Note: The information contained in this message, including any attachments, may be privileged, confidential, and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the Sender immediately by a "reply to sender only" message and destroy all electronic or paper copies of the communication, including any attachments.