If you're facing an Epson Printer offline error, then presumably, the rationale may be a bad network connection or an outdated print driver. to repair the matter, firstly, you want to make certain of a correct network connection, and for that, you'll restart the router. Next, visit the devices and printers section, right-click your Epson printer and choose the choice set because the default printer, also uncheck Use Printer Offline option. Then, visit the Epson support website and choose the printer driver and install it on your computer. If you're still facing the matter, then uninstall and reinstall the Epson printer on your computer. Hopefully, these will fix the offline Epson printer error.