The HP OfficeJet Pro 8620 is an all-in-one printer designed for home and office use, offering features like printing, scanning, copying, and faxing. The "nullscannet" issue you're referring to typically arises when there's a problem with the HP Scan software or the Windows driver for the printer, especially during the installation or scanning process.
The "nullscannet" error usually appears when the scanning function fails, or if the scanning software cannot detect the scanner properly. This can be caused by outdated or corrupted drivers, miscommunication between the printer and PC, or improper installation of the HP software suite.
To fix this and install the correct Windows driver for the HP OfficeJet Pro 8620 (and address the "nullscannet" issue), follow these steps: