HP Easy Scan not working with Mac OS Mojave

[HBA4432]

I have an Apple iMac (Retina 5K, 27-inch, 2017) running macOS Mojave Version 10.14.6. After updating to Mojave, HP Scan software stopped working. I downloaded and installed HP Easy Scan Version 1.9.4 from the App Store. When I try to scan a document I get the following error message: "Scanner reported an error. Software for "%@" failed to run." In the HP Easy Scan window there is a yellow triangle next to the picture of my printer. When I hover over the triangle, I see the following: "Cannot retrieve device information. Software for "%@" failed to run. Scanning can be performed only with default settings when device becomes available." I have had no problems with printing, but I can't scan. Printer is connected to my iMac wirelessly.

[BryanCustomPure · Accepted solution]

The solution is to download (and install) this package which will update drivers AND THE CERTIFICATE:
ftp://ftp.hp.com/pub/softlib/software12/HP_Quick_Start/osx/Installations/Essentials/hp-printer-essen...

Easy Admin did nothing. Easy Startup did nothing. 5.1 drivers did nothing. This worked for me!

If this solved your issue, please thumbs up and mark as solved!

[SharonBur]

This did not work. I am so frustrated right now. The scanner was working fine and now it doesn't work at all. I am getting that error "Software for "%@" failed to run. (-9927).

Please help. 😞

[BryanCustomPure]

Did you download and install the package I linked? After that, did you uninstall and reinstall your printer in the Printers section of the System Preferences menu?

[SharonBur]

Yes, I downloaded from your link. I did uninstall the printer and reinstalled it in the System Preferences menu. I also get this message when I am installing the printer in the System Preferences menu: "Some of the software fort the printer is missing. The software is available from Apple. Would you like to download and install it?" I have to click ok or it won't work.

Before I started the process I also deleted the "hp" folder from "Printers" folder in the "Library" folder. This whole issue seems like an hp problem. It seems that between yesterday and today a lot of people are all of a sudden having this issue. Does not make any sense. Also, I haven't done any updates lately.

[BryanCustomPure]

You said you downloaded my link, but did you run/install it?

[SharonBur]

Yes, of course I installed your software from the link.

[BryanCustomPure]

Sorry, I had to ask. Several people have downloaded and then not installed, so it may seem obvious, but apparently it's not.

Did you re-download the HP 5.1 drivers after?

Try it in this order:

Install the package. Download the 5.1 drivers (https://support.apple.com/kb/dl1888?locale=en_US) and install those. Add your device in System Pref/Printers.

[SharonBur]

No go. I just did everything in the order you suggested and it still did not work. 😐

I am hesitant to even buy another HP printer because it might not work.

[BryanCustomPure]

Try re-downloading the 5.1 drivers in the link I gave, and then try uninstalling and then reinstalling your printer using the System Preferences/Printers & Scanners menu. Then restart. Let me know what happens.