Hii my name is Luna Fallon i am from the technical team if you are facing a problem then you can visit our site.Due to several reasons your HP Envy printer may be offline such as a poor network connection, outdated printer drivers, and issues with printer settings. If the printer is connected wirelessly, it may lose connection due to a weak signal or a change in network settings. Incorrect settings on the printer, such as being set to "offline" or "sleep mode", can cause it to go offline. Troubleshooting steps may include checking the network connection, updating drivers, and ensuring correct settings on the printer.