Check that the printer is powered on
Make sure the printer is connected to Wi-Fi or Ethernet
Confirm the computer and printer are on the same network
Restart the printer
Restart the computer
Turn off Airplane Mode on the device if enabled
Open printer settings on the computer
Select the printer
Set the printer to online or remove offline mode
Cancel any stuck print jobs
Clear the print queue
Set the printer as the default printer
Reconnect the printer to the network if needed
Update or reinstall the printer driver
Run the printer troubleshooter if available
Check for paper jams or low ink alerts
Restart the router if the printer still shows offline
Remove and add the printer again if needed