HPDM.framework pop-up warning won't go away. new scanner software doesn't install successfully.

[Tom-S1]

It started with the HPDeviceMonitor pop-up warning.  The HP support site told me the new printer driver was 'required' and the scan driver was 'recommended.'  I downloaded both.  Both had check marks and said installation was successful, but when I clicked on 'continue,' the color wheel started to spin and kept spinning.  The update got hung up & I couldn't stop it.  I had to force quit.  I tried a couple of times more, and got the same result.  Now, instead of the above warning, I get an '"HPDM.framework" will damage your computer' pop-up which won't quit.

[BryanCustomPure]

The solution is to download (and install) this package (From HP FTP) which will update drivers AND THE CERTIFICATE:
ftp://ftp.hp.com/pub/softlib/software12/HP_Quick_Start/osx/Installations/Essentials/hp-printer-essen...
The install takes a bit. Let it run, even if it seems like it stalled out!

It is NOT the same as the driver package, Easy Start, or Easy Admin other people are recommending.

If the link comes up blank, try right clicking and saving it. If you install this package and still have trouble, try restarting. Then go about uninstalling your printer and reinstalling by going through Apple Logo (Upper Left of Screen)/System Preferences/Printers & Scanners. Then restart your computer.

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!

[whitebpsd]

Unfortunately this does not fix it.

I ran that on an end users computer (10.15.7), restarted, the message went away. They then added the printer (we have a script that installs printers via LPD), they sent a job to the printer, HPDM pop-up came back. 

I'm going to now re-install the HP drivers to see if that fixes it, per:

https://mrmacintosh.com/hp-printer-driver-certificate-issue-driver-will-damage-your-computer/

[BryanCustomPure]

Try using the uninstaller and Easy Start in the instruction set below:

Use the HP Uninstaller: https://support.hp.com/us-en/document/c02440673
If you still have a folder marked HP, delete it (likely in your "Libraries" folder(s).

Use Easy Start (https://support.hp.com/us-en/drivers/selfservice/hp-easy-start/7376041 - make sure your OS is correct) and see if your printer is supported. If not, move on to the next steps.

Uninstall your printer USING THIS METHOD ONLY (NOT EASY START, NOT EASY ADMIN): Apple Logo (Upper Left of Screen)/System Preferences/Printers & Scanners. Then restart your computer.

Download (and install) this package (From HP FTP) which will update drivers AND THE CERTIFICATE:
ftp://ftp.hp.com/pub/softlib/software12/HP_Quick_Start/osx/Installations/Essentials/hp-printer-essen... If the link comes up blank, try right/control clicking and saving it. Or right/control click and copy link, and paste into browser bar. If you get the malware warning part-way through the installation, go to System Preferences>Security & Privacy where you can tick a box and unblock the HP option.

The install takes a bit. Let it run, even if it seems like it stalled out! When it completes, restart.

Then reinstall your printer using: Apple Logo (Upper Left of Screen)/System Preferences/Printers & Scanners, and use the default drivers. If drivers do not show up, download and install the 5.1 driver package from here: https://support.apple.com/kb/dl1888?locale=en_US . Then restart your computer.