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The most effective method to Fix HP Envy 4520 Offline Error
HP Envy 4520 printers, goes offline because of issues with the cartridge, or the wireless system or if there are PC related issues. You can easily recover from this by reinitializing your wireless router and after that restarting your PC.
You can likewise reinstall the HP envy 4520 Software Download on your PC to counteract more issues.Download the software and introduce the printer driver to your PC from 123.hp.com/envy4520
Click the start menu and go to “Devices and Printers” on your computer.
As appeared in the picture given below right click on HP Envy 4520 Printer symbol and afterward go to "See what's printing" section.
Like specified in the below picture, remove the check in 'Use Printer Offline'. After some time, your HP printer will be online and you can begin printing.
In the event that despite everything it doesn't begin then you can Turn OFF your HP Envy 4520 printer and disconnect it from your PC and after few minutes reconnect it with your PC and Turn ON the power.
At last, Restart your PC and with that, your HP Envy 4520 printer will work perfectly, without going to offline mode once more.