You are shocked to see the error HP printer offline when you are in the middle of important work. You don’t know what to do? You wonder why is my HP printer offline? Is it something wrong or serious? There is a high possibility that there must be a connection error. See whether the USB cable between the printer and the PC is connected properly. If the connection is not proper then tighten the cable. If the above solution doesn’t help to resolve the issue, you can contact us anytime. We provide 24 x 7 assistant service.