My printer has recently gone offline. I have

Hi
Re-check your cartridges installations.
Clean the cartridge contacts
Try cleaning the 'printhead'.

Put back the old cartridges try if print sucsess swap the cartridges find which was faulty.

E5 means your cartridge error. May I know are you using original ink cartridge or yours has been modified before?
I assume you to refill your ink cartridge before because E5 error won't appear after replacing new cartridge.
So, you need to take out both of your ink cartridge and then use a clean cloth to wipe them. After that, slowly put in back into the printer. If the error is still there after wiping it, try to do it till the error is gone.
I had tested this way with my own printer and it works again without needed to buy a new ink cartridge.
All the best and good luck =)

restart computer

SEE THE WARRANTY CARD AND EXCHANGE IT

Several printers are connected to my Dell and sometimes without paying attention I forget which printer I'm using. On your print set up page scroll down until to your printer and select it. If you have only one printer, then select it as your default printer.

Did you recently change the ink cartridges=? Did you use third party or refilled cartridges?

If so, that may be the problem. Some printers have logic in them to drop offline if ink other that the manufacturer's is used.

If you are using factory new ink, please let me know and I/ll continue to try and assist you.

Don

replace ink cartridge

Open your printer, remove the cartridge, reinstall them back again and close the printer properly and firmly. Start your printer again after that....