When your HP printer is offline, first **check the printer’s connection** to your computer or network (USB cable securely plugged or Wi-Fi connected properly). Then, **restart the printer, computer, and router**—this often resolves connectivity issues. After that, **set your HP printer as the default printer** in your computer’s Control Panel under “Devices and Printers.” Also, check the print queue for stuck jobs and clear them if needed. If the printer remains offline, verify the printer’s network status (Wi-Fi light should be solid for wireless printers) and troubleshoot cables or move the printer closer to the router. In some cases, updating or reinstalling printer drivers may help. If problems persist, consider uninstalling and reinstalling the HP Smart app and performing a network reset by turning off all networking devices, waiting a few minutes, then turning them back on in sequence (router first, then computer/printer)[1][2][4].