The Printer sometimes gets stuck. The message Another Computer Is Using The Printer appears everytime a new device connects. One of the better solutions to fix the printer is to hard-power recycle it. Turn off the printer and leave it unplugged for at least a minute to accomplish this. Restart it and connect it to your computer or network after that. Try printing a document right now. The power recycle makes sure the printer is available for usage and is no longer in a busy state.