Check that the printer is powered on
Make sure the printer is connected to the same Wi-Fi network as your computer or phone
Restart the printer
Restart your computer, phone, router, and printer
Check the printer for error lights or paper jams
Open printer settings and set the printer to online
Remove the printer and add it again in your device settings
Clear the print queue
Set the printer as the default printer
Update or reinstall the printer driver
Check the USB cable or network cable if using a wired connection
Run the printer troubleshooter on your device
Turn off any VPN or firewall temporarily and test again
Reset the printer network settings and reconnect it to Wi-Fi
Contact the printer manufacturer if it still shows offline