Printer won’t print double sided

[Goaway4]

My HP LaserJet won’t print double sided no matter what I do. I’ve tried it on multiple devices, in multiple apps. I’ll select double sided and it will just completely ignore me. How do I fix this?

[Repairatrooper]

Not all models duplex, as you do not state the model, cannot provide an answer. Post more information and someone can likely point you in the right direction.

[Goaway4]

Mine does, and it has in the past. It’s just suddenly stopped. It’s an HP LaserJet MFP.

[Repairatrooper]

If you have a multi-function unit, try to make a 2 sided copy. If that does not work you may have a hardware issue. If it does work you most likely are dealing with a driver configuration issue. Either the driver is not detecting that the printer is duplex capable or a driver that does not support duplex is installed, such as a Microsoft IPP driver. [Content Removed]

MAC or Windows PC. If Windows, on your PC, go to control panel>devices and printers and right click on the icon for your printer and then click on the device settings tab, scroll down and make sure that it shows duplex unit=installed, as below:

[Goaway4]

I only have iOS and iPadOS right now, my computer is down. In the past, I have been able to print duplex from my mobile devices just fine.