Showing results for 
Search instead for 
Did you mean: 
We would like to share some of the most frequently asked questions about Instant Ink. Check out this link: HP INSTANT INK, HP+ PLANS: INK AND TONER. .
New member
1 0 0 0
Message 1 of 3
Flag Post

79 Service Error and MFP M477fdw printer continuously restarting

HP Recommended
Color LaserJet Pro MFP M477fdw
macOS 11.0 Big Sur

For the past several days, my printer has been cycling on and off and showing "Error 79" when it restarts.


I disconnected the printer from the network, powered off the router, turned off the printer, waited for 30 seconds. turned the printer back on, turned off IPv6 (actually, it was already off) and then turned it back on again. When I reconnected to the network, the problem resumed. 


Please let me know if there are any other steps I should take. I'm running Mac OS Big Sur




Level 4
Level 4
119 119 3 4
Message 2 of 3
Flag Post
HP Recommended



Hope you are well, please go to system preferences > printers and scanners and please remove the printer icon.

Then please perform a factory reset on the printer, from set up , please go to service and perform factory reset. 


After that, before connecting the printer back to network, please print a configuration report from the set up menu of the printer and make sure there is no 49 or 79 errors, if its able to print fine, printer is working fine.

Restart computer and modem. Proceed to reconnect printer to the network and make sure the 49 or 79 error is not coming up as soon as the printer is connected to network, if no errors, please reinstall the printer in the computer, just by adding it from the printer and scanners menu.


if errors are coming back just by reconnecting the printer to the network, please make sure there non pending jobs from the computer or any other device that can print to this printer.



I am an HP employee
New member
1 1 0 0
Message 3 of 3
Flag Post
HP Recommended

This solution worked very well. Thanks for posting it.

0 Kudos
Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation