OfficeJet 8720 Software app does not launch

[Durga88]

So the software app (8720 officejet) used work, and I was able to scan. Something happened, and I can't even launch the app.

I tried uninstalling, reinstalling, installed so called EASY stuff, etc. It detects the printer, asks for bunch of questions on FAX and at the end, recommends easy stuff and when I click it says the model not supported. 
The o HP 8720 app does not even launch. When you click on the app nothing happens.

[sandytechy20]

@Durga88

Welcome to the HP support community.

Are you using HP Smart app?

If yes, follow these steps to fix the issue.

Perform root level uninstallation to remove all the printer related software's.

• In Windows, search for and open Programs and Features.
• Select your HP printer.
• Select Uninstall.
• In Windows, search for and open Devices and Printers.
• In the Devices and Printers window look for your HP Printer. If you see it listed, right-click on it and choose "Delete" or "Remove Device.”
• Open up the run command with the "Windows Key + R" key combo.
• Type printui.exe /s and click OK.
• Click on Drivers tab.
• Look for HP Printer driver. If you see it click on it and click Remove at the bottom.
• Select OK.
• Remove all instances of the same.
• Select Apply and OK on the Print Server Properties windows.
• Close Devices and Printers. 
• Restart the PC again.

Download and install HP Smart app

Here is the link:- Click here

Let me know how it goes.

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

Cheers.