Xerox digital BookMark System User Guide

This document provides instructions for upgrading NT Enhanced Interface print drivers on 
a Windows NT, 2000, XP or 2003 platform. These processes involve print drivers shared 
from a server or local installs on workstations. You should have an intermediate level of 
understanding of Windows operating systems and printer driver installation to perform 
these procedures. 

If you are planning an upgrade, please follow the procedure outlined in this document.

 

 To either upgrade or change the PDL of an NT Enhanced kernel mode driver, 

DO NOT click New Driver (located on Advanced tab in Windows 2000/XP/2003) or New 
Driver (located on the General tab in Windows NT) in the driver’s Properties in the 
Printers folder! Doing so can result in driver and/or feature corruption or blue screens. NT 
print drivers run at the kernel mode level. Because of this, driver corruption can lead to 
operating system crashes.  Please see the section “Background-Kernel Mode vs. User 
Mode Drivers,” at the end of this document for more information. 

These failures occur because the operating system locks dll files in memory. The 
operating system does not release these files from memory when you use the New 
Driver button, so that they do not update to the newer version. This can cause conflicts 
between the new driver files and the old dll’s, still resident on the system. This procedure 
outlines the recommended method to ensure all files are updated to the appropriate 
version. 

If you have attempted to upgrade an NT Enhanced Interface print driver and are now 
experiencing failures, please see Customer Tip # dc00cc0115 Uninstalling Windows NT 
4.0 and 2000/XP Printer Drivers located at 

help correct these issues. 

For each Document Centre print driver you wish to upgrade, we recommend that you 
delete all printer objects associated with that print driver and reinstall a new driver. Follow 
the same process to change a driver PDL (Printer Description Language) - PostScript to 
PCL or PCL to PostScript. 

If the driver(s) you delete are on a server in a PnP (Point n Print) environment, also 
delete the print drivers from the workstations. 

Xerox Multifunction Devices 

Customer Tips 

… for the user 

Dc04cc0327 
February 26, 2004 

 To either 

upgrade or change the 
PDL of an NT Enhanced 
kernel mode driver, DO 
NOT click New Driver 
in the driver’s Properties 
in the Printers folder!