So, what should you do when you get the "Dell Printer Offline" warning and you can't print the document? The message "Dell Printer Offline" refers to a printer that cannot communicate with Windows or Mac operating systems. As a first step to troubleshooting, check that the power cord, printer connection, and Wi-Fi are properly connected. To resolve printer offline problems, check the printer driver and software to make sure that no other scanning problems have resulted.