I bought a new HP printer yesterday and as soon as I set it up I started to get this message. It pops up again as soon as I delete it. Can see kind person advise me how to get rid of it, and indeed any other dodgy malware on My MacBook Pro?
MacBook Pro 15″, macOS 10.15
HP have admitted to this being their fault. Long-serving forum member Kurt Lang posted this on Oct 24:
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. A HP Inc spokesperson told us on Friday night (Oct 23):
“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.”
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.
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)
Unfortunately I am not at all surprised...😎
@Steffen-Otto-Jensen. Thank you very much for your solution. I tried it and it worked!
me either, I did not understand the steps....
When trying to add printer window appears saying: “fax.backend” will damage your computer
It worked! Thank you so much!
How can i set up, my 2 printers?
When ever i connect my mac pro with HP printer "fax.backend will damage your computer." shows on screen. and not able to connect printer.
when i attempt to use my printer I get the warning "Fax backend " willdamage your computer": what is "Fax backend " what should I do?
Have you read the rest of this thread? The other posters were able to come up with a solution.
NEVER use anything that claims to clean, disinfect, scrub, or find your Mac a mate. You paid Apple a shed-load of money to built automatic protection, cleaning. maintenance, and defragging into the Mac oS. It's been there for a couple of decades.
The third-party fearware only interferes with the built-in functions, and will slow or, worse, destabilize your Mac.
Both your replies are hugely helpful, Allan. I am downloading the latest Apple update now So perhaps that will sort things out. AND totally agree re Apple. Their post-purchase “care” leaves a lot to be desired!
I would advise the exact same procedure as i described, i think your system has cached the old drivers, so when you uninstall and try to reinstall it uses the old cached drivers.
Using the installation cd's will not help, as they are most likely also signed with an obsolete key.
So follow my instructions carefully, deleting the exact files described. Then reinstall the drivers letting osx download the drivers for the found printer itself.
Should work, if the problem persists, I'm not sure why, except that you for some reason has not been able to follow instructions.
It would be interesting to hear if you are successful, if not then write exactly what you did, so before you begin keep a log to post here if you are not successful
Best luck
Steffen
I am having same issue "fax.backend will damage your computer". I am a novice Mac user and do not understand how to delete the files named in your email which solved this problem. Can you provide a step by step explanation of your technique? Thanks!
I ended up going through my applications and deleted the app called "fax.backend". I was then able to connect with my new printer & move on.
"fax.backend will damage your computer."
