PDE.Plugin will damage your computer

Read this Apple document: If your HP printer doesn't work and you see a warning that HP software '...will damage your computer' - Apple Support  

PDE plugin is a part of the HP software. You have a slightly different manifestation of the same problem as above.

As such, deleting your current print queue, downloading the new version of the HP software, then creating a new Print Queue should solve your problem as well.

READ the Apple articles and follow the links already provided.

remove your non-functioning Print queues.

remove the HP software using HP Un-Installer from the link on the HP web site (provided in the Apple article)

NB>> DON'T skip the steps above, or new Drivers can not be installed!

At That point, when you try to use Add-A-Printer, MacOS should automatically fetch the updated drivers for you.

If that fails, you can download the drivers manually.

to Install software, your Admin Userid and password (on your computer, Not your Apple-ID) is what is always required.

If you are logged in as an Admin User, your Admin username will be shown in the dialog box. if you are NOT an Admin, no username will be shown and you must enter an Admin Username as well as the password that goes with it.

If you have the same problem, read the answers posted so far and you can use the same solution already proffered.

If you have a different problem, please start a new discussion with a name that will attract readers who can help.

My computer says 'pde.plugin will damage your computer" when I try to print.

how do i get rid of this notice so i can print from my email?

answer my question

HOW DO I FIX PRINTER ERROR PDE-PLUGIN WILL DAMAGE YOUR COMPUTOR

How do I fix this issue?

I've been getting this and other dialog boxes and I can't access either of my HP printers :“PDE.plugin” will damage your computer.

same problem. same solutions as above.

Senior contributors on the forums are on the trail of this issue:

From sources familiar with the matter, HP Inc asked Apple to revoke its printer driver code-signing certificates. It appears this request backfired as it left users unable to print. An HP Inc spokesperson said on Friday night:

We unintentionally revoked credentials on some older versions of Mac drivers. This caused a temporary disruption for those customers and we are working with Apple to restore the drivers. In the meantime, we recommend users experiencing this problem to uninstall the HP driver and use the native AirPrint driver to print to their printer.

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HP supplied a new driver on Friday to fix the issue:

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

However, that "fix" is producing this error for some users:

"Matterhorn.framework" will damage your computer…

If you're seeing that, try this fix. Go to System Preferences, select Printers and Scanners. Select your printer from the list then delete (-) it. Then add (+) your printer back and select the generic driver to use.

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Update: HP Printer Software 5.1 should now be becoming available through Software Update to fix this issue.

(2220 UTC 23 October 2020)

Open >System Preferences>Software Update (Command R will reload and do a fresh check)

If you don't see it there, Apple now has it posted as a separate, manual download.

HP Printer Drivers v5.1 for OS X

https://support.apple.com/kb/dl1888?locale=en_US

My printer will not print from my new MacBook Air. I just get the above message.