See the plus sign beside software utility on this HP page? Click that and it shows the setup program for the printer which you must download. One such is for offline installation and that is how you would install it after downloading it to your download folder. YOu double click on the file there to get it to run AFTER you are offline, if you choose that option. I see there is a CRITICAL firmware update that needs downloading and installation as well. Do NOT attempt to install them simultaneously but rather sequentially. There is nothing wrong with them sitting in the same download folder prior to you getting offline for installation purposes.
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See the plus sign beside software utility on this HP page? Click that and it shows the setup program for the printer which you must download. One such is for offline installation and that is how you would install it after downloading it to your download folder. YOu double click on the file there to get it to run AFTER you are offline, if you choose that option. I see there is a CRITICAL firmware update that needs downloading and installation as well. Do NOT attempt to install them simultaneously but rather sequentially. There is nothing wrong with them sitting in the same download folder prior to you getting offline for installation purposes.
https://support.hp.com/us-en/drivers/selfservice/hp-officejet-pro-8030-all-in-one-printer-series/24208734/model/24208735