Hi I am Sam, If HP Envy 4500 printer can go offline for various reasons, including the following: If the printer is not properly connected to the computer or the network, it may go offline. If the printer's firmware is outdated, it may go offline. If there is a paper jam in the printer, it will go offline until the jam is cleared. If there is a problem with the printer, such as a mechanical failure, it will go offline.