10-19-2017 04:17 PM
I would like to add that I'm experiencing the same issue, which started when I upgraded to Mac OS High Sierra 10.13.
I'm running a HP LaserJet Pro M277dw with the latest firmware.
Scan to Network Folder is broken, unless I scan at 75 dpi (which is so odd!)
I will be monitoring the forms in the hopes that a resolution can be found.
10-24-2017 01:38 PM
Same issue. IMac runing 10.13 + MFP M277dw.
(1) Can't scan to network folder thru' the printer touch screen LCD. Keep on restarting the printer with error #79
(2) Can't connect to scanner when doing test at HP web control panel. 'Connection Failed' if no login and password were supplied. Or kept on restarting the printer with error #79.
Everyting is fine when 10.12.
10-24-2017 06:32 PM
Welcome to the HP Forums. I would be happy to help you with your HP Color LaserJet Pro MFP M277dw Printer. I understand that you are getting network scanner connection issue and you have already done some preliminary troubleshooting.
Don't worry though as I have a few steps to determine the issue and find a solution as well.
Restart devices and check driver scan settings.
Check the network and printer connection status.
Check third-party firewall software settings.
Remove and re-add the printer.
Uninstall the printer driver and software.
Reinstall the latest scan driver and software.
Reset the print system.
Right-click the blank space in the Printers list, then click Reset printing system....
Figure : Resetting the print system
Click Reset in the confirmation window.
Enter the Administrator name and password, then click OK.
Wait for the printing system to reset. When complete, no printers should display in the list.
Try installing the HP driver and software again, then add the printer to the Mac.
Try to scan.
Click here and refer the document to perform the above steps.
Let me know if that helps.
I am an HP Employee