chicotheman wrote:
I cannot find a software update for 10.15.7
How can I get my Office Jet Pro 8600 printer to work after updating to Catalina 10.15.7?
Open >System Preferences>Software Update (Command R will reload and do a fresh check)
Update: HP Printer Software 5.1 should now be becoming available through Software Update to fix this issue.
(2220 UTC 23 October 2020)
or
Apple direct download:
https://support.apple.com/kb/dl1888?locale=en_US
If you still have an issue, and listed as AirPrint printer, delete the existing printer in
> System Preferences> Printers & Scanners, and add it again, select AirPrint.
Connect an AirPrint printer to a Wi-Fi network - Apple Support.
https://support.apple.com/en-us/HT201900
about AirPrint
https://support.apple.com/en-us/HT201311
you can also try reset print system if necessary:
If you can't print from your Mac or iOS device - Apple Support
https://support.apple.com/en-us/HT203343