If you're struggling with the issue of the HP Envy 5660 printer Showing Offline, then follow a few steps mentioned here. Restart the printer; if this doesn't work for you, you will need to reinstall the drivers. For that, go to Settings, then Printers, and choose the printer. Right-click on the printer and select Properties. Under the General or Details Tab, look for the driver button and select it and choose the driver again. You can also reinstall the printer. To go about it, go back and select the printer under Printers in the Settings menu, then delete the printer and reinstall it through the Add printer wizard. Make sure to use the latest printer driver from the printer manufacturer's website to get the HP Envy 5660 series printer offline issue fixed.