'hpPostProcessing.bundle' malware?

Happy to help.

I resolved it on my own and with help from this site. Two calls to Apple produced wasted time with two different technical support reps. Thanks for the insight!

This worked for me (from this discussion: Sudden Problem with Printing): "With a fixed IP address for the printer, I added a "new" printer with that address, using IPP and configuring as a Generic PostScript Printer." That worked for a VERY old HP 4700.

I do have a few macs around. I generally use a raspberry pi when I need a print server.

I have found that using the built in cups ppd files via local host:631 generally gets me good outcome. Using the usb Port on macs direct to printers is getting more tricky but then, using cups directly is more forgiving than the Mac system.

in my experience even really old printers can generally cope with being told they are a generic pce-hp laserjet 4 or 5. That is regardless of whether they are hp or something different like a Kyocera. In my experience the cost of running Kyocera printers is really good and they hardly ever go wrong.

MacOS uses CUPS every time you print. Yet the number of postings specific to CUPS is extremely small.

That is truly remarkable, given the complexity of CUPS, but the simplicity it imparts to Mac Printing.

This Apple article contains a link too the official HP article that addresses the subject. Its advice is similar to what has already been posted here. you need to get rid of the existing Printer queues, delete old drivers, download new drivers and re-create print queues. Details in the HP article.

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

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The first couple of times around, I tried running HP UN-Installer, but it didn't work. The icon bounced around on the dock, but nothing else happened.

I just tried it again, and it worked. Shrug.

I think it's one of those magic things that happens when I ask for help. The computer gods out there straighten things out, when it's not just me they are messing with.

Thank you for the help, Grant.

Appreciate your expertise and sharing.

Have a terrific 2021

Breathe

HP appears to have taken a major step BACK away from supporting their older "dumb" printers (that do imaging on the computer instead of imaging in the printer), especially the mess they sent into the marketplace with special drivers for only one model. Faced with updating a lot of different software to run with Big Sur, they instead asked Apple to de-authorize all their old drivers.

Their network-capable "smart" printers (with PCL or Postscript support) work fine with updated drivers.

Just 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.

I cannot fix my older Hp Laser Jet printer p2015. I don’t have AirPrint capabilities.

Wiping out the old HP drivers (delete the folder in Finder) and installing the HP Printer Drivers v5.1 for OS X did the trick for me! Working off an old HP Laserjet 1022n.

OK,

1. Delete all your printers from Printers
2. Delete /Library/printers/hp
3. reset printers > right click in printer panel
4. reinstall, printer, should involve an automatic download

Try to print

This Driver pack is damaged, macOS Big Sur.

After removing Print Queues, did you follow the advice in the HP article to download and run HP UN-Installer?