Hi,
Thanks for using the HP Support Community.
Please Uninstall and Reinstall the FULL feature software following these steps:
1. Uninstall the software in your computer
2. Download and save the FULL feature software (do not install it online)
https://support.hp.com/us-en/drivers/selfservice/swdetails/hp-officejet-pro-9020-all-in-one-printer-...
3. Install the FULL feature “Saved” software
Once you have downloaded and installed the FULL feature software, you will be able to print and scan.
If you are not sure how to do this, the following resource will walk you through the steps:
How to Uninstall Download & Reinstall a Printer software (some examples)
https://www.youtube.com/watch?v=qn8BV46biSc
https://www.youtube.com/watch?v=UlasAOAgL_0
Other useful examples for using this printer:
https://www.youtube.com/playlist?list=PLUV0sXfF6zPguNcBJu9yI4tmwShUFPUUYhttps://www.youtube.com/watc...
Hope that helps!

I am an HP Employee
Although I am speaking for myself and not for HP.
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