Canon printer may go offline unexpectedly due to several different reasons, the most prominent being the network connectivity glitches or using out-of-date Canon printer drivers. Hopefully, the answer presented here will resolve your query on My Canon printer is offline. First of all, begin with restarting your network router, reconnect the cables at their planned slots, replace the frayed or worn out cables, and make sure you are trying to connect your Canon to the same router as your computer. Next, you should set your Canon printer as a default device on your computer. For that, go to the Control Panel, right-click on you can on the printer, and click set as default. Now open the print queues, click the printer tab and make sure we Use Printer Offline option is not checked. You may again click the Use Printer Offline option and then uncheck it again to confirm the settings.