To find a solution for the Canon Printer Offline problem on MAC, visit the Apple Menu. Additionally, choose System Preferences and then click Printer & Scanner. In the left panel, a pop-up window will also appear. Reset the Printing System by using the right-click menu. You'll be prompted for a login name and password. Click OK after entering both credentials. A moment will pass before the printer list opens. Add the printer once more at the very end by using the plus sign.