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HP Recommended

‘Encryption credentials expired’ message

OfficeJet Pro 8720
macOS 10.13 High Sierra

Last week, the message detailed in the subject box above appeared on my iMac screen every time I tried to print a document/photo etc. Printing from my iPad/iPhone was not affected and worked fine. 


I spent half half an hour on the phone with an HP technician. He was excellent; he connected to my iMac remotely and solved the problem which he identified as a software issue. 


For 2 days, the printer worked perfectly. Yesterday the same message appeared and I’m back to square one! 😩


Can anyone help please? 

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