Generally, the HP Printer Driver Is Unavailable error occurs if the printer driver isn't up-to-date or is corrupt, or else new Windows updates are needed. Corrupt and incompatible printer drivers, however, are the most common causes for driver is not showing on computer error problem. In order to fix this issue, you are required to reinstall your printer’s driver with the upgraded version. Now, print a test page to check whether your printer driver is now available when printing. If yet it is unavailable, then update your Windows Operating System as soon as possible as incompatible device won’t let your driver to visible.
Printer driver is unavailable