These are some of the most common reasons why the Epson Printer is Offline. That your computer and printer are not properly connected is inferred by the presence of this problem. The printer's failure to connect to the computers could be the result of a hardware or software problem. Your printer can stop working if the Spooler service is halted or stalls. The issue can also be caused by wrong printer settings if your printer isn't set up as the default printer.