An offline printer is one of the common issues that primarily occur because it cannot communicate with the computer. You can change this by changing the printer settings. Firstly, click on the Start menu. Then click on "Devices and Printers." After that, double-click on the printer's icon or complete the process of hp printer assistant download. Then open the printer menu. Then uncheck "Use Printer Offline" to switch the printer's status from offline to online.