If your HP printer suddenly fails to work or if you even see a malware warning when printing from the Mac, you are affected by a software error for which HP is apparently responsible. According to reports, at the manufacturer’s endeavor, a certificate required for printing was mistakenly revoked by Apple. They are working with Apple to reverse this mistake.
The problem has created additional confusion as it does not appear to affect older Apple operating systems. On the desktop, the error only occurs in connection with macOS Catalina. Responsible here is the operating system’s integrated malware protection, which at Catalina apparently relies on a new and regularly updated database, while the comparable database for older Mac systems has not been updated for a long time. The online magazine Eclectic Light Company has dealt extensively with this topic.
According to user reports, affected users have the option to fix the problem by reinstalling the following version of the printer drivers:
The driver version itself is the same as before, but with this download the security certificates required to avoid the error message also land on the Mac again.