To scan now I use the Image Capture application.
When asked if you want to use the Generic or HP drivers select HP. Download and install the new drivers and follow the prompts. On the HP site make sure you select the proper iOS - the site defaults to OS 10.15. Open System Preferences, Printers & Scanners, add a printer using the Generic PCL Laser Printer and it worked for my OfficeJet 8600 Pro. (I was unable to delete 2 HP kernel files and they remained). HP printer driver is an application software program that works on a computer to communicate with a printer. Within the Use drop-down menu, be sure to select the Officejet Pro 8600 printer from the list.
You will be able to connect the printer to a network and print across devices. Get started with your new printer by downloading the software. Turn off the printer and unplug it for ~5 minutes. Uninstall the Printer using the HP Uninstall, go into Finder and search for anything/everything HP and delete those files - everything HP related. Empty the Trash. Restart the computer. Again go into Finder and search for anything/everything HP and delete those files - everything HP related. Empty the Trash. Again restart the computer. Welcome to the HP Official website to setup your printer.