HP Smart and Print & scan Doctor don't scan

[SP1936]

I have a Windows 11 OS laptop connected to my HP Deskjet Ink Advantage Ultra 4720Series all-in-one printer scanner copier.  It was working fine but everytime I had to use print and scan doctor to scan. HP smart gives me error " cannot connect to scanner "....? Now Print and scan Doctor takes me through the whole diagnose and repair process and when I finally press test scan or scan it say cannot find printer >>>>....? I did try and download drivers for Windows 11

Can someone please guide me. My HP software is up to date. tried changing USB ports . worke for one scan and the failed again and again 

[Betty0610]

@SP1936

Welcome to the HP Support Community.

I'd be happy to help.

Let's try to do a root uninstall and reinstall of the software:

Unplug any USB cable, if any, before doing this.

1.) In Windows, search for and open Programs and features

2.) Select your HP Printer

3.) Select Uninstall

4.) In Windows, search for and open Devices and printers

5.) In the Devices and Printers windows look for your HP printer. If you see it listed right-click on it and choose 'Delete' or 'Remove Device'

6.) Open up the run command with the "Windows key + R" key combo.

7.) Type printui.exe /s and click Ok. (Note: there is a space in between “printui.exe” and “/s”)

8.) Click on the "Drivers" tab

9.) Look for HP Printer driver. If you see it Click on it and click Remove at the bottom

10.) Select Ok

11.) Select Apply and Ok on the Print Server Properties windows

12.) Close Devices and Printers

13.) Open up the run command with the "Windows key + R" key combo

14.) Type c:/programdata and click Ok. Go to Hewlett Packard folder, remove any printer related folders & files.

15.) Restart the computer.

Once done, please download and install the software from here:

https://support.hp.com/in-en/drivers

Let me know if this helps.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!

Thanks!

Have a great day!