HP Deskjet 3420 Printer Offline

 Printer offline error is due to improper/irregular communication between the printer and the network source.

  • Get the HP Print and Scan doctor utility tool to fix the offline error.
  • Reset the printer and the router to resolve the problem.
  • Make the printer as the default one for printing/scanning jobs.
  • Connect the printer a proper wireless or wired network.
  • Make sure to update the printer driver to the latest version.
  • Get the latest version of the firmware installed for the printer.

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