Hi Alain, The Windows PrintQueue is using the Windows driver you have set up for the KR403. The driver settings are overriding the settings you have configured. First, please make sure you have installed the ZebraDesigner driver for the printer as otherwise it may be missing some of the correct settings you want to use. Then you will want to set up the driver with the correct settings. That should fix the problem. Otherwise you will have to use ZPL entirely and the Win32 APIs to bypass the driver.