HP Printer showing offline it is common issue in HP Printer. IF you have not connected printer and computer to check your network properly.
1. Try to set the printer to online. Go to Settings and afterward Printers. Right-click on the printer icon and click Use Printer Online.
2. Double-click on printer icon, then select printer menu and click Cancel all documents.
3. There may be a stuck in print work. That would make the printer go disconnected.
4. Reboot the printer and computer. In case it doesn't work, reinstall the driver.
5. Go to Setting choose your printer. Then right click on printer and choose Properties.
6. Go to General or Details tab. Search for the driver icon and select it.
7. Reinstall the printer. Under Printers in the Settings choose the printer at that point evacuate the printer and reinstall it through the Add printer wizard.
If you Follow all these step and your issue is solve other wise you need to help click here.