HP printer offline Windows 10 problem occurs when there is a connection issue. To fix it, restart your printer. Also, disconnect the power cord and reconnect it after 10 seconds. When the internet comes back on, use the HP smart app to link your printer to your network. Then print a wireless report to check if the issue persists. Another fix for the offline error is to check w... https://www.hpprintersupportpro.com/blog/stop-my-hp-printer-from-going-offline/