The application “HPScanner” can’t be opened.

jorgefgr wrote:

Since certain version of Big Sur (I don't think this problem started with the first beta), and definitely with the just released official version, my HP Deskjet F4180 (HP Deskjet F4100 series) is not working. I haven't tried printing, but the scanning feature that was part of the macOS is not working. Is anyone else having the same problem? Any advise as to how to fix it? I've followed an Apple article, which leads to a HP article, to no avail.

The initial error message is this:

“HPScanner” will damage your computer.

If you click on OK, this pops up:

The application “HPScanner” can’t be opened.

And the scanner app itself shows this message:

Failed to open a connection to the device (-21345)

I already have a pile of papers I haven't been able to scan. If you can, please help.

Thank you..!

Official Apple HT Published Date: November 06, 2020

HP's security certificate has expired.

* If your HP printer doesn't work and you see a warning that HP software '...will damage your computer' https://support.apple.com/en-us/HT211921

If you still have an issue, delete the existing printer in

> System Preferences> Printers & Scanners, and add it again.

Connect an AirPrint printer to a Wi-Fi network - Apple Support.

https://support.apple.com/en-us/HT201900

you can also try reset print system if necessary:

If you can't print from your Mac or iOS device - Apple Support

https://support.apple.com/en-us/HT203343

If you are still at a loss: https://123.hp.com/us/en/

If you have continued issue:

You download this package which will update drivers AND THE CERTIFICATE:

ftp.hp.com/pub/softlib/software12/HP_Quick_Start/osx/Installations/Essentials/hp-printer-essentials-S-5_14_8_4.pkg 

download link above at the ftp address

jorgefgr wrote:

By the time you wrote the first time, I had already used the hp.com link to download a uninstaller, which I used. Then I downloaded the ftp file you suggested and executed. Then I tried to add the printer but it didn't work.

Then, using Time Machine, I restored an hp folder to computer/Library/Printers, and that I re-run the file you provided on the ftp. Again, I'm no longer able to add the printer.

This is a disgrace!

Yes it is HP is lagging behind.

If you are still at a loss:  https://123.hp.com/us/en/