Can't fix driver settings?

[missakay]

Okay, this has been plaguing me on my Macbook for months but now it's started happening on the PC, which is the computer the printer is actually installed on. Through various other trouble-shooting options (thinking it was MS Word then my Mac) I have discovered it's the printer that has the problem!!! And I am about to lose my dang mind. My printer will not stop printing two-sided. On my Mac, I used CUPS to try & change the Driver settings, but it wouldn't let me. When I look at the printer info, it clearly tells me "Driver: HP OfficeJet Pro-AirPrint (color, 2-sided printing)" which I realize is specific to Mac because "Airprint". But like I said, it's not happening on our PC's as well. So it's definitely a printer driver issue. I have installed the newest driver offered on the HP website and reset the printer to default settings. What am I not doing? And this just happened out of the blue. We've had this printer for quite awhile and never had this issue before. Just all of a sudden, we were getting 2-sided printing jobs! And we can't stop it. Even if we uncheck Collate or whatever in the print dialogue menu it still prints 2-sided.

[sandytechy20]

@missakay

Welcome to the HP Forums, this is a great location to get assistance! I read your post and see that you are unable to disable duplex printing from Mac and Windows PC. I would like to help you resolve this issue.

However, I will need a few details to provide an accurate solution,

• Did you update the printer firmware?

if not, perform a power reset

1. Turn on the printer, if it is not already on.
2. Wait until the printer is idle and silent before you continue.
3. With the printer turned on, disconnect the power cord from the rear of the printer.
4. Wait at least 30 seconds.
5. Plug back the power cable straight to a wall outlet without any surge protector and printer.
6. Turn on the printer.

Update the printer firmware: 

Here is the HP document with steps to update the printer firmware:- https://support.hp.com/au-en/document/c02919168

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others and please give the same post a Kudos.

Let me know how it goes.

Cheers.