Incorrect settings, out-of-date drivers, or connectivity problems can all cause a "HP Printer Offline" error. The printer may lose its connection to the network, or the computer might default to an offline mode. To fix this, ensure your printer is powered on and properly connected to Wi-Fi or your computer. Clear any stalled print tasks by checking the printer queue. Update your print... https://medium.com/@aryannraj65/how-do-i-get-my-hp-printer-back-online-hp-printer-offline-26d40e557224