Power cycle is first and basic steps user can perform when they are getting any kind of issues with the printer. Most of the times printer can stop working due to overheating and continuous printing jobs. So user can turn off their printer and turn it on again after few minutes. User can simply restart the system and printer unit.
Check the internet connection:
Poor connection is one of the major reasons behind the canon printer offline issue. User should check their internet connection to resolve the canon printer offline error. Network canon printer users can reconnect their printer with the Wi-Fi network.
User can restart their router or contact their internet service provider to fix the no internet or slow internet problem.
Check USB connection:
The users which connect printer and system with the help of USB cable should check if they are properly connected or not. User can try to connect system and printer unit with the help of another USB cable. If it works then user need to replace their USB cable with new one.