'hpPreProcessing.filter will damage your computer' Error
The 'hpPreProcessing.filter will damage your computer' error are scary-sounding messages that many macOS users with HP-made printers ended up seeing after a recent update to Apple's operating system. The messages comes from the security features of macOS, but we assure you that there is nothing to worry about. The 'hpPreProcessing.filter' is not part of any harmful software, and, instead, it is a component used by HP's printer drivers. The reason you see the 'hpPreProcessing.filter will damage your computer' error is that you are using outdated printer drivers. According to posts from the official Apple forums, the issue might also be caused by outdated drivers signed with an expired certificate – this the type of situation that is likely to cause Apple's operating system to show the 'hpPreProcessing.filter will damage your computer' error.
The first thing to do when you see the 'hpPreProcessing.filter will damage your computer' error is not panic, and proceed to install a fresh copy of your HP printer drivers. Remember only to download drivers from the manufacturer's official website – 3rd-party sites may not always serve up-to-date, trustworthy content.
To avoid future problems of this sort, you should always try to update drivers and software after downloading an important operating system update. Doing this will reduce the odds of encountering messages like the 'hpPreProcessing.filter will damage your computer' error greatly.
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