The most common reason why this happens is because the “Enable bidirectional support” checkbox is checked under the Ports tab in the Properties of your printer. To uncheck this, go to your Printers and Faxes/Devices and Printers page, right click on your printer and select Properties/Printer Properties, click the Ports tab, uncheck the “Enable birdirectional support” checkbox, then click the Apply button, and then click the OK button.