Termination Reason: Namespace CODESIGNING, Code 0x1įor me, this identified two items: /Library/Printers/hp/Fax/fax.backend/Contents/MacOS/fax and /Library/Printers/hp/filter/hpPostProcessing.bundle/Contents/MacOS/hpPostProcessing were both crashing every time I submitted a print job. I was able to identify the specific components that had the code signing issue by I knew that it wasn't the printer itself because I could print to it from other machines over the network. It never shows up as a failed job, the printer is not paused, etc. The symptom is that you submit a print job, any print job, and it never prints. It seems that the HP drivers' code signing certificate for older print/scan drivers expired, and since HP has not updated the drivers since 2017, there is no solution to be had from HP. I encountered this problem on my iMac 2019 running Catalina 10.15.7 with a JetDirect-networked HP Laserjet 2055dn.
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