If your Printer is Offline, make sure it is Wi-Fi connected, see if the built-in menu on your printer has options for testing its Wi-Fi connection, or consult the printer's manual for information on how to add it to a Wi-Fi network. Restarting your printer can sometimes fix problems. After turning it off and unplugging it, wait 30 seconds before plugging it back in and turning the printer back on. Sometimes it can help to restart your computer to update the services.