Canon printer offline error occurs when your device or computer and printer are not connected. Sometimes it may be as simple as your cable not correctly attached or a simple error from a paper jam. However, a printer appearing as a “Canon Printer Offline ” error can also be down to your printer driver or software problems.
Just follow the below-mentioned step to fix this error:
Select Start > Settings > Devices > Printers & scanners. Then select your printer > Open queue. Under Printer, make sure Use Printer Offline is not selected.
If you cannot do it on your own, you can connect to us for better advice and service.