Your Mac does not have malware, it's just got printer drivers that HP mistakenly asked Apple to block. Here's how to work around the problem.

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If your Mac was infected, installing all system updates could help get rid of the virus or malware. Follow the steps below to keep your macOS updated at all times: Click on the Apple logo in the upper-left. Remove malware from Mac manually: The Activity Monitor. If you know which app on your Mac is.

Hewlett Packard has now explained the recent spate of Mac printer problems that saw users being warned of 'malware' — but it hasn't yet solved it. While HP and Apple are reportedly working together to resolve the issue, users are still being prompted with warnings saying it 'will damage your computer.'

'We unintentionally revoked credentials on some older versions of Mac drivers,' said a HP spokesperson. '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.'

As previously reported, AirPrint is the answer if you need to actually print anything out. To get rid of the repeating error message, though, you may still need to take certain steps.

1. Go to System Preferences
2. Click on Printers & Scanners
3. Choose your HP printer from the Printers list on the left
4. Click the minus sign at bottom left
5. In the Finder, go to ~/Library/Printers/hp
6. Drag the printer driver to the trash
7. Go back to System Preferences
8. Click on Printers & Scanners if it doesn't open at that
9. Click the plus sign at bottom left and re-add the printer

To go the ~/Library/Printers/hp folder, go to the Finder and choose Go, Go to folder.. from the menus. Or press Command-Shift-G.

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This will clearly delete the printer driver, but what it then does is force your Mac to download a new copy. Once you've re-added the printer, it will be using the new, updated driver and should work correctly.

These steps should fix the issue because HP has effectively undone its mistake. According to The Eclectic Light Company, the problem was that what HP asked Apple to do was revoke its security certificate for the file 'HPDeviceMonitoring.framework.' In theory, then, this can just be un-revoked.

However, The Eclectic Light Company says that at time of writing, users are still reporting what appear to be related problems. If you're in that situation, there currently seems no better alternative than contacting HP support.

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